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Blind Side Waterproofing Injection

Curtain Injection Training and Visualization

Introduction

In the competitive world of construction, innovation is key to staying ahead, and blind side waterproofing is transforming how contractors address water intrusion. By employing blind side injection technology, this advanced method forms durable, moisture-proof barriers on the exterior or hard-to-reach sides of below grade structures.

Combining precision and effectiveness, it offers a reliable solution to complex waterproofing challenges while opening up opportunities for contractors to expand their expertise and services.

Blind Side Waterproofing using Polyurethane Foam Injection Technology

Cross-training and diversifying services have become essential for contractors seeking to stay ahead in the specialty construction repair and waterproofing industry.

Expanding into specialized techniques like blind side waterproofing can not only be strategically advantageous but also highly lucrative. By adopting advanced technologies such as blind side injection, contractors can provide innovative solutions to complex waterproofing challenges.

Showcasing the Power of Blind Side Waterproofing

A recent demonstration highlighted the effectiveness of urethane-based injection systems in blind side waterproofing applications. Using state-of-the-art tools and materials, the process showcased the water-displacing properties of hydrophobic foam under two different scenarios, demonstrating both precision and versatility.

Maze Simulation:

A mock-up mimicking a maze-like structure was created using a concrete patio paver fitted with a plexiglass panel. The setup allowed observers to see the hydrophobic foam’s growth as it expanded into confined spaces, utilizing available moisture to polymerize into a closed-cell foam. The foam not only displaced water but also formed a durable, water-repellent barrier, ensuring no further water could penetrate the structure.

Open Space Simulation:

In the second mock-up, the foam was injected into a wide, open cavity. As moisture was introduced via a pressurized water bottle, the resin reacted, expanded, and filled the void. This demonstrated the foam’s ability to adapt to different spaces, provided moisture was present to trigger the polymerization process.

The equipment used in these demonstrations included a signature pump for precise material delivery, as well as versatile packers designed for efficient injection into drilled ports. These tools showcased the seamless application of hydrophobic foam in real-world scenarios.

Video: Curtain Injection Mock-up to Demonstrate Permeation and Expansion of Grout at 2x Speed

Blind Side Injection in Practice

Blind side injection, a cornerstone of modern blind side waterproofing techniques, is currently being implemented in high-profile projects. One such project involves the use of a 2-foot-on-center staggered drilling grid to inject hydrophobic foam behind a wall. This process creates an interlocking network of foam disks on the blind side of the structure, forming a continuous barrier against water intrusion.

This method effectively prevents hydrostatic pressure from pushing water through the wall and into interior spaces. For building tenants and management, the results are clear: dry, functional spaces protected from water damage and its associated risks.

Benefits of Blind Side Waterproofing

Blind side waterproofing, particularly when utilizing curtain and bladder injection technology, offers a range of advantages over traditional waterproofing methods:

Precision: Targets problem areas directly with minimal disruption to the structure.
Durability: Forms a long-lasting, water-repellent barrier that resists moisture infiltration.
Versatility: Effective in confined spaces, large voids, and various construction scenarios.
Cost-Effectiveness: Reduces the need for excavation or demolition, lowering project costs.
Adaptability: Works in a variety of below grade applications.

These benefits make blind side injection an essential tool for contractors looking to provide cutting-edge waterproofing solutions.

A Strategic Advantage for Contractors

With many companies prioritizing lean operations, contractors who expand their capabilities into blind side waterproofing can gain a significant competitive edge. By mastering advanced systems, such as urethane leak seal injection, contractors can position themselves as leaders in the industry while addressing critical waterproofing needs for clients.

Blind side injection technology is not only practical but also highly adaptable, providing reliable solutions in diverse scenarios. This makes it an ideal addition to a contractor’s skill set, enhancing their ability to take on high-value projects.

Best Practices for Blind Side Waterproofing

To achieve success with blind side waterproofing, contractors should follow these best practices:

Comprehensive Site Assessment: Identify areas most susceptible to water intrusion and plan the injection grid accordingly.
Proper Equipment Usage: Utilize specialized pumps and packers for precise material delivery.
Controlled Moisture Introduction: Ensure adequate moisture is available for foam polymerization without over-saturation.
Strategic Drilling Patterns: Use staggered drilling grids to ensure comprehensive coverage.
Ongoing Training: Invest in cross-training teams to maximize efficiency and expertise.

These practices ensure that projects are completed efficiently and to the highest standards.

Blind Side Waterproofing Products

Blindside waterproofing injection systems, such as those offered by SealBoss, provide cutting-edge solutions for preventing water infiltration in below-grade construction. Products like polyurethane foams and resins are designed for rapid expansion and adaptability, effectively permeating soils and aggregate, as well as sealing cracks, voids, and joints even in high-pressure water conditions. Acrylate gels are particularly well-suited for fine crack injection and soil permeation, delivering low-viscosity penetration and forming flexible, long-lasting water barriers.

For structural repair and reinforcement, epoxy resins offer exceptional bonding strength and chemical resistance, ensuring durable protection in demanding environments. These advanced materials work seamlessly with SealBoss injection systems to deliver reliable, efficient, and long-term waterproofing solutions.

Learn More About Blind Side Waterproofing

For contractors looking to expand their service offerings, blind side injection and other advanced waterproofing systems present a significant opportunity. By embracing this innovative technology, professionals can tackle complex waterproofing challenges while delivering long-lasting, high-performance results.

To learn more about these systems and how they can enhance your next project, visit SealBoss.com or contact a technical advisor today.

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Leak Sealing Methods

Leak Repair Overview

Leak Sealing Methods

Introduction

This article provides an overview of various methods for sealing leaks in concrete structures, emphasizing the importance of choosing the right technique based on factors like leak severity, material compatibility, and environmental considerations.

It highlights the most common methods: crack/joint injection and curtain grouting, which are essential for maintaining the structural integrity of concrete structures including tunnels, dams, commercial buildings, and foundations in general. The article also explores other leak sealing methods and options like epoxy resin injection and swellable waterstop caulking and water activated, expanding polymer strip tapes, discussing their applications and effectiveness.

Key considerations for method selection are outlined, including the size and location of the leak, material compatibility, effectiveness, environmental impact, cost-efficiency, regulatory compliance, and long-term sustainability.

The conclusion underscores the necessity of a comprehensive understanding of these factors for making informed decisions that ensure the safety and longevity of concrete structures.

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Ensuring Integrity in Concrete Structures

Water leaks in concrete structures can pose significant challenges, necessitating a thorough exploration of leak sealing methods. The integrity of structures like tunnels, dams, and foundations depends on the effectiveness of these methods. This article delves into the various techniques available, their applications, and the factors influencing their selection.

Crack/Joint Injection and Curtain Grouting

Crack/joint injection and curtain grouting stand out as the most prevalent techniques for addressing active water leaks in concrete structures. These leak sealing methods are the first line of defense against water intrusion, providing immediate solutions to maintain structural integrity.

Crack/Joint Injection – A Focused Approach to Leak Sealing

Crack/joint injection is a precise method that involves injecting polyurethane grout into specific cracks or joints where water is actively leaking. This technique is renowned for its effectiveness in sealing everything from minor seepage to significant leaks across various concrete structures, including walls, foundations, and commercial parking structures.

Curtain Grouting – Creating Barriers Against Water Intrusion

For larger leaks or when the precise leak location is elusive, curtain grouting is the method of choice. This leak sealing method involves injecting grout in a pattern that forms a waterproof barrier, particularly behind tunnel linings, offering a robust solution to water ingress.

Epoxy Resin Injection – Strengthening and Sealing Combined

While epoxy injection is primarily used for structural repairs, it also serves as an effective barrier against water intrusion. However, its use as a water stop is limited in areas with very active leaks.

Epoxy resins, synthetic polymers known for their strong adhesive properties, are particularly useful for sealing leaks in a variety of structures. Their ability to bond with concrete, some metals, and wood makes them a versatile option in the leak sealing methods arsenal.

Swellable Waterstops – Expanding the Fight Against Leaks

Swellable waterstops are hydrophilic materials that expand upon contact with water, effectively sealing off leaks. These are commonly implemented in construction joints and are highly effective in segmented concrete tunnels and structures.

Key Considerations for Leak Sealing Method Selection

The choice of a leak sealing method is influenced by several factors

Severity and Location of the Leak
The size and accessibility of the leak are key in determining whether crack/joint injection or other methods like curtain grouting are appropriate
Material Compatibility
The compatibility between the sealing material and the structure, such as concrete linings in tunnels, is crucial. Polyurethane grouts are compatible with concrete, while epoxy resins are better suited for metal surfaces
Effectiveness
The method’s ability to seal the leak and prevent future occurrences is the foremost consideration
Environmental Considerations
In environmentally sensitive areas, such as near water bodies, the selection of eco-friendly sealing materials is imperative
Cost-Efficiency
Long-term costs, including maintenance and potential resealing, should be considered alongside the initial cost
Regulations – Compliance
It is essential to select a method that adheres to local regulations to avoid any legal issues
Long-Term Sustainability
The method should provide a durable solution to minimize the need for frequent repairs

Conclusion

Leak sealing methods extend beyond crack/joint injection and curtain grouting. A comprehensive understanding of material compatibility, leak severity, and environmental impact is essential in selecting the appropriate method. By considering these factors and the outlined criteria, stakeholders can make informed decisions that offer long-term benefits, ensuring the safety and longevity of concrete structures.

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Flooded Tunnel Repair

Underground Injection Grouting

A Spotlight on SealBoss 1510 Water Stop Foam and SealBoss EZ Flow Plastic Button Head Injection Packers

Introduction

Flooded Tunnel Repair: How to Stop Water Migration, Infiltration and Inflow in Underground Passages

Flooded tunnel repair is an essential process for maintaining the structural integrity and functionality of critical infrastructure like utility tunnels, storm drain systems, and primary sewer lines. These systems, when compromised by cracks, leaks, or structural weaknesses, are at risk of water migration and infiltration—a phenomenon known as Infiltration/Inflow (I/I) in the sanitary sewer industry. If left unchecked, water ingress not only deteriorates infrastructure but also poses significant environmental and safety risks.

With advanced tools, proven products, and effective repair methods, underground tunnel structures and expansive pipe systems can be restored to their intended performance. This article explores innovative techniques for flooded tunnel repair, with a focus on SealBoss 1510 Water Stop Foam and SealBoss EZ Flow Plastic Button Head Injection Packers.

The Challenge of Flooded Tunnel Repair

Journey Beneath: Unveiling the Underground

In this captivating video clip, viewers delve deep into a shadowy underground drainage tunnel, witnessing the significant impact of water ingress. Illuminated only by the beams of headlamps and makeshift lighting, the scene reveals a structure submerged in over a foot of water.

Despite the uninviting environment and jobsite conditions, the skilled injection team remains focused and determined, united by one mission: to repair and seal the structure.

Enter the SealBoss 1510 Water Stop Foam and SealBoss EZ Flow Plastic Button Head Injection Packers – a dynamic duo that promises effective and lasting solutions.

SealBoss 1510 Water Stop Foam: A Game-Changer in Flooded Tunnel Repair

The SealBoss 1510 Water Stop Foam is a polyurethane-based chemical grout renowned for its ability to stop water migration efficiently.

This injection project showcases the power of SealBoss 1510 Water Stop Foam. As the foam is injected, it migrates rapidly, filling cracks, fissures and voids, effectively stopping water ingress. The foam’s expansion and curing properties make it an ideal solution for such challenging environments, ensuring that the tunnel’s water tight integrity is restored.

Key Benefits:

High Expansion Rate: The foam effectively seals even the smallest gaps, preventing water flow.
Fast Curing Time: Once injected, it hardens quickly to form a durable barrier against water.
Versatility: Suitable for use in a variety of underground environments, including tunnels, pipelines, and many underground commercial and residential structures.

The Role of SealBoss EZ Flow Plastic Button Head Injection Packers for Floded Tunnel Repair

Ensuring Secure and Highly Efficient Grout Delivery

The effectiveness of SealBoss 1510 Water Stop Foam depends on precise delivery, which is made possible by SealBoss EZ Flow Plastic Button Head Injection Packers. These innovative injection tools are designed for efficiency, reliability, and ease of use in demanding conditions.

One of the highlights of this injection project is the impeccable, leak-free connection between the injection grout line’s slide coupler and the button head packers that have been installed. This is largely attributed to the purpose driven design of the button head packer and slide coupler, ensuring a secure connection, and eliminating the need for the contractor to manually hold it in place.

Additionally, the expansive inner diameter of both the coupler and button head, combined with the oversized ball valve design, facilitates the pumping and delivery of chemical grout at impressive flow rates and volumes. This guarantees that the foam is dispensed exactly where required.

SealBoss EZ Flow Plastic Button Head Injection Packers are instrumental in efficiently and securely delivering the SealBoss 1510 Water Stop Foam. They ensure the foam is dispensed at high volumes and appropriate pressures, streamlining and enhancing the repair process.

Conclusion

With the right tools and products in place, underground injection and flooded tunnel repair no longer needs to be a daunting task for crack injection teams. With the combined power of SealBoss 1510 Water Stop Foam and SealBoss EZ Flow Plastic Button Head Injection Packers, even challenging grout injection environments can be tackled with confidence.

This project serves as a powerful example of how cutting-edge materials and innovative tools can effectively restore the integrity of underground infrastructure, such as tunnels and pipelines. As the industry continues to evolve, solutions like these will remain at the forefront, enabling contractors to tackle water migration and infiltration with precision and reliability.

Investing in quality products and adopting proven repair techniques ensures not only the longevity of critical infrastructure but also the safety and well-being of communities that depend on it.

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Hydrophobic Injection Foam Grout

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Water Cut-Off Injection Grout
Unregulated for transport. Drinking Water Contact meets NSF/ANSI 61 Section 5 requirements. 1510 PU Foam & Oakum Pipe Plug Kit

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EZ FLOW PLASTIC INJECTION PACKER | PLASTIC PORT

High Volume Easy Flow Packer | EZ Flow Packer Design

Plastic packer with large inner diameter for high volume product flow. The packer is threaded and equipped with a removable, sleeve for good grip. Free-floating large ball valve for high volume applications. Buttonhead top for secure connection and minimal leakage. Suitable for PU grouts, Acrylate Gels (Acrylic Gels). Also available with zerk fitting.

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Polyurethane Injection Kit

Leak Sealing Water Infrastructure Projects Effectively

Introduction:

In large-scale water infrastructure projects, maintaining structural integrity through effective leak sealing is essential. Cracks and leaks in holding tanks, pipelines, and other critical components can compromise the entire system’s efficiency and safety.

A polyurethane injection kit provides a comprehensive solution to these challenges, combining specialized polyurethane grout, durable injection packers, and a portable, high-powered injection machine. Designed to address the demanding requirements of water infrastructure, these kits ensure reliable, long-term repairs that enhance operational stability. This article explores the pivotal role of polyurethane injection kits in large water projects and their effectiveness in achieving lasting leak sealing in complex environments.

Polyurethane Injection Kit: Effective Leak Sealing in Water Infrastructure Projects

For large-scale infrastructure projects like the North Water Treatment Plant in Gilbert, Arizona, sealing leaks in critical areas such as holding tanks is a top priority. This high-stakes project required an advanced polyurethane injection kit to efficiently seal cracks and maintain the plant’s long-term structural integrity.

Using specialized polyurethane grout, injection packers, and a portable injection machine, this comprehensive kit is invaluable for leak repair across diverse climates, from Arizona’s warm, reaction-accelerating conditions to colder environments.

SealBoss 1570 LV Polyurethane Injection Kit: Engineered for Tight Cracks

At the core of the project’s leak-sealing success was the SealBoss 1570 LV Polyurethane Injection Kit, renowned for its precision in sealing fine cracks. This kit’s key component, the SealBoss 1570 LV Water Stop Foam, is a hydrophobic polyurethane grout designed to penetrate ultra-tight spaces. Its low viscosity and centipoise allows it to fill the narrowest fissures at low pressure, making this polyurethane injection kit highly effective for infrastructure repairs that require thorough and lasting sealing.

BP-13-100 AL Aluminum Packers: Reliable Components in the Polyurethane Injection Kit

Included in this specific polyurethane injection kit are the industrial grade and economically friendlyBP-13-100 AL aluminum packers, which ensure secure entry points for grout injection. These aluminum packers feature a crucial anti-return valve, helping to control grout flow and enabling precise, port-to-port injection techniques. Known for compatibility with both polyurethane and epoxy grouts, these packers are reliable for various long-term infrastructure repair projects, making the polyurethane injection kit versatile and cost-effective.

P2002 Drill-Operated Injection Machine: Power and Portability

Another key element in the polyurethane injection kit is the SealBoss P2002 drill-operated injection machine. Compact yet powerful, this machine was designed specifically for professional applications where maneuverability is essential. The P2002 machine allowed contractors to quickly and accurately apply grout, making it an essential tool in the polyurethane injection kit for large projects requiring efficiency and reliability.s

Adapting the Polyurethane Injection Kit for Temperature Conditions

Arizona’s warm climate introduced additional challenges, as chemical reactions in polyurethane can accelerate under heat. Adjustments to the injection timing and material preparation helped optimize the polyurethane injection kit under these conditions, demonstrating the importance of environmental planning. With temperature-sensitive materials, even slight adjustments to the process, such as adjusting the use of accelerator SealBoss 15x, can yield optimal results.

Top Benefits of Using a Polyurethane Injection Kit System for Water Infrastructure Projects

Using a polyurethane injection kit offers significant advantages for water infrastructure projects:

Optimized Injection System: The polyurethane injection kit combines specialized grout, durable packers, and a reliable pump, creating a fully integrated system designed for optimal performance. This synergy allows for ease of application, controlled flow, and the best possible sealing results, making the process straightforward and efficient for contractors.
Precision in Tight Spaces: Low-viscosity polyurethane grouts allow thorough penetration into fine cracks, ensuring lasting repairs.
Durability and Flexibility: Polyurethane is highly resilient to water exposure and pressure, ensuring that repairs remain intact over time.
Efficient Application: With portable, powerful equipment like the P2002 injection machine, polyurethane grout can be applied quickly and accurately.

Conclusion - Polyurethane Injection Kits

In summary, our various polyurethane injection kits, exemplified by the SealBoss 1570 LV Kit, integrate all necessary components for effective leak-sealing in large-scale water projects.

The North Water Treatment Plant in Gilbert, Arizona, showcases how advanced polyurethane injection kits can enable reliable, long-lasting repairs, highlighting their critical role in preserving essential infrastructure.

Ready to enhance your water infrastructure projects with reliable, long-lasting, leak sealing polyurethaen injection kits?

Discover the benefits of a polyurethane injection kits today. With a fully optimized systems that combines precision grout, durable packers, and a powerful pump, this kit is designed for efficiency, ease of use, and superior results.

Contact SealBoss to learn more about our injection solutions and find the perfect kit for your project needs.

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Concrete Crack Repair

A Quick Guide to Polymer Grout Injection

Introduction:

Concrete structures are highly valued in construction for their durability and strength, but even the most resilient concrete can develop cracks over time. Concrete crack repair is essential to maintain both the structural integrity and the appearance of concrete buildings and infrastructure. Among the most effective techniques is polymer grout injection, which includes using polyurethane resins and foams, acrylates, and epoxy resins. This guide explores these polymer-based injection methods, their benefits, and detailed processes to ensure effective concrete crack repair.

Polymer Grout Injection for Concrete Crack Repair

Injection grouting is a versatile and widely adopted technique for concrete crack repair. It involves injecting specialized liquid grouts into cracks within the concrete under pressure.

As the grout hardens, it seals the cracks while either creating a flexible waterproof seal or restoring the structural integrity of the concrete using high-strength bonding agents.

This article covers three main types of polymer grouts for concrete crack repair:

Polyurethane resins and foams, acrylates, and epoxy resins.

Concrete Crack Repair with Polyurethane Resin and Foam Injection

Polyurethane resin and foam are excellent and highly effective for waterproofing and sealing cracks in concrete structures. Known for their flexibility, polyurethane-based resin and foam solutions are ideal for concrete crack repairs in foundations, basements, retaining walls, dams and concrete structures where water ingress poses a significant problem.

Benefits of Polyurethane Injection for Concrete Crack Repair:

Flexible waterproof seal: Accommodates movement in concrete
Water stop and moisture barrier: Prevents water infiltration
Structural reinforcement: Inhibiting further deterioration of concrete.

Process Overview:

Drill holes at regular intervals along the crack based on conditions
Clean the cracks and holes
Install injection packers into the drilled holes
Inject polyurethane resin starting from the lowest point
Remove injection ports

Polyurethane resins are ideal for waterproofing as they form a watertight seal, preventing water ingress in basements and other below-grade structures. These resins also add structural integrity to the concrete by filling the cracks and preventing further deterioration.

The injection process begins with drilling holes along the length of the crack at regular intervals. The spacing of the holes depends on the size and extent of the crack. The cracks and drilled holes are then thoroughly cleaned to remove any dust, debris, or contaminants, ensuring proper adhesion of the polyurethane resin.

Injection ports, also known as packers, are installed into the drilled holes to prevent leakage during the injection process. The polyurethane resin is injected starting from the lowest point if the crack is vertical or from one end if it is horizontal, continuing until the resin appears at the next port or from the surface.

After the resin has cured, the injection ports are removed and the surface is cleaned. If necessary, the area is ground or sanded to match the surrounding concrete.

Concrete Crack Repair with Acrylate Injection

Acrylate injection grouts are popular for concrete crack repair due to their super low viscosity and fast-setting characteristics. Acrylates are well-suited for fine cracks and are often used in curtain injection to create a waterproof barrier behind the concrete.

Benefits of Acrylate Injection for Concrete Crack Repair:

Super Low viscosity: Penetrates very fine cracks and fissures
Fast setting: Ideal for curtain injection
Versatility: Suitable for various leak and moisture conditions

Process Overview:

For curtain injection drill holes in a pattern at suitable intervals through the structure to create a bladder/curtain seal on the positive side behind the structure
Clean the cracks and holes to remove contaminants
Install injection ports
Inject acrylate grout starting from the lowest point
Remove ports and clean the surface

Due to their low viscosity, acrylates can migrate through very fine cracks that other grouts cannot, making them ideal for situations where other resins cannot penetrate.

The injection process for acrylates begins with drilling holes along the crack at intervals suitable for the size of the crack. The cracks and holes are then thoroughly cleaned to remove any contaminants.

Injection ports are installed into the drilled holes and securely placed to prevent leakage. The acrylate is injected starting from the lowest point or one end of the crack, continuing until the acrylate appears at the next port or the surface. Once the acrylate has cured, the injection ports are removed and the surface is cleaned.

Concrete Crack Repair with Epoxy Injection

Epoxy injection is widely recognized for its high strength and bonding capabilities,making it an excellent choice for structural concrete crack repair. Epoxy resins not only restore the strength of concrete but also create a durable, watertight seal.

Benefits of Epoxy Injection for Concrete Crack Repair:

High tensile and compressive strength: Restores structural integrity to concrete
Versatility in viscosity: Can repair both fine and wide cracks
Outstanding bonding: Forms a permanent bond with the concrete

Process Overview:

Install surface ports over the crack
Seal the crack between the ports
Inject epoxy resin starting from the bottom of the crack
Remove the ports and finish by cleaning and grinding

Epoxy resin formulations provide high tensile and compressive strength, making them ideal for restoring the structural properties of compromised cracked concrete. Available in varying viscosities, epoxy can be used to repair both hairline and wider cracks.

The injection process for epoxy begins with placing surface ports over the crack and bonding them using a fast setting epoxy paste. The crack between the packers is sealed using the same fast cure epoxy paste to prevent epoxy leakage.

The epoxy resin is injected starting from the bottom of the crack and working up, continuing until the epoxy appears at the next surface port. After the epoxy has cured, the injection ports are removed. If necessary, the area is ground or sanded to match the surrounding concrete.

Conclusion - Why Polymer Grout Injection is Ideal for Concrete Crack Repair

Polymer grout injection—which includes using polyurethane resins, acrylates, and epoxy resins—is one of the most effective methods for concrete crack repair. Each type of grout offers unique properties that make it suitable for specific applications, from waterproofing to structural reinforcement. By following the correct procedures and selecting the right materials, repair professionals can successfully restore and preserve the integrity and appearance of concrete structures.

If you need guidance or technical support for your concrete crack repair projects, consult with industry experts. SealBoss offers comprehensive solutions and expert assistance to help you achieve long-lasting results in your concrete crack repair efforts.

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Types of Concrete Cracks

A Concrete Crack Overview

Introduction:

Concrete structures can experience a range of cracks due to various causes, including environmental factors, structural issues, and material weaknesses. As a concrete repair professional, understanding these different crack types and how to address them using suitable repair methods—such as polyurethane resin, foam injection, acrylate gel, and epoxy injection—is essential for maintaining the integrity and longevity of concrete structures.

For Concrete Crack Repair Details read our Quick Guide

Concrete Crack Repair – A Quick Guide to Polymer Grout Injection

Types of Concrete Cracks

Shrinkage Cracks in Concrete
Shrinkage cracks occur when hardened concrete loses moisture during the curing process, causing it to contract. These cracks are common in driveways, slabs, and foundation walls. As concrete dries over time, this moisture loss can lead to shrinkage if the concrete is restrained, resulting in cracks. These cracks may be larger and can appear throughout the structure.
Cause: Uneven moisture loss and restraint in the structure.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or, in some cases, epoxy injection to regain structural strength.
Plastic Shrinkage Cracks in Concrete
Plastic shrinkage cracks form while the concrete is still in its plastic (unhardened) state. They result from rapid moisture evaporation from the surface, often due to high temperatures, low humidity, or strong winds. These shallow cracks resemble a spiderweb pattern and typically affect newly poured slabs.
Unlike regular shrinkage cracks, which develop after the concrete has hardened and contracted over time, plastic shrinkage cracks appear within the first few hours after pouring, making them a common issue in newly poured slabs or exposed surfaces. These cracks are typically shallow and widespread across the surface, while regular shrinkage cracks are generally larger and occur throughout hardened concrete structures.
Cause: Rapid moisture loss from the surface during curing.
Repair Solution: Typically Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress. Acrylate gel in some cases.
Spalling Concrete Cracks
Spalling occurs when sections of concrete break away from the surface, exposing the reinforcing steel. This typically results from corrosion within the steel, causing it to expand and exert pressure on the surrounding concrete.
Cause: Corrosion of embedded reinforcing steel.
Repair Solution: Epoxy injection to fill and bond the cracks, combined with a surface coating to prevent future corrosion.
D-Cracking in Concrete
Durability cracking, or D-Cracking, results from concrete’s inability to withstand freeze-thaw conditions. It usually manifests as cracks running parallel to joints or linear cracks, often with discoloration around the affected area. D-Cracking is primarily caused by the use of coarse aggregates that trap moisture, which expands during freezing and leads to cracking over time.
Cause: Coarse aggregates that absorb moisture and expand during freezing.
Repair Solution: Polyurethane injection, which remains flexible during freeze-thaw cycles.
Corrosion Cracks in Concrete
Corrosion cracks develop due to the rusting of steel reinforcement embedded in concrete. As the steel corrodes, it expands, creating internal pressure that leads to cracking.
Cause: Rusting of embedded steel.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or epoxy injection to regain structural strength.
Stress Corrosion Cracks in Concrete
Stress corrosion cracks arise from a combination of tensile stress and a corrosive environment. These cracks are common in marine structures, bridges exposed to de-icing salts, or industrial facilities where chemical exposure is prevalent. This phenomenon often involves the interaction of aggressive chemicals (like chlorides or sulfates) with embedded steel reinforcement, resulting in cracks that may propagate rapidly under continued stress.
Cause: Interaction of tensile stress with corrosive chemicals.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or epoxy injection to regain structural strength.
Overloading Cracks in Concrete
Overloading cracks develop when concrete structures bear more weight than they were designed to handle. These cracks usually occur in heavily trafficked areas like driveways or industrial floors where heavy machinery operates.
Cause: Excessive loads exceeding the design capacity.
Repair Solution: Most likely high-strength epoxy injection to restore structural integrity.
Concrete Expansion Cracks
Expansion cracks develop when concrete expands due to heat, exerting pressure on the structure. Like most materials, concrete expands when heated, and if it lacks sufficient space to expand, the resulting internal stress can cause cracks. Expansion joints are often installed to provide relief and absorb the stress of expanding concrete.

Cause: Thermal expansion without adequate expansion joints.
Repair Solution: Polyurethane foam injection, which is flexible enough to accommodate movement.
Heaving Cracks in Concrete
Heaving cracks typically occur in cold climates where freeze-thaw cycles are common. When water within the concrete freezes, it expands considerably, causing the concrete slab to lift or “heave.” As temperatures rise and the ice melts, the slab settles back down, leading to the formation of cracks due to the constant movement. This can be prevented by allowing space for expansion and contraction.
Cause: Freeze-thaw cycles and temperature changes.
Repair Solution: Flexible polyurethane foam that can expand and contract with temperature variations.
Crazing and Crusting Cracks in Concrete
Crazing refers to shallow, fine cracks resembling spider webs that appear due to premature drying. Crusting, on the other hand, occurs when the top surface dries faster than the bottom during stamping. While these cracks are not usually structural concerns, they can impact aesthetics and lead to moisture ingress.
Cause: Uneven drying during the curing or stamping process.
Repair Solution: Low-viscosity polyurethane foam for sealing and moisture protection.
Disintegration Cracks in Concrete
Disintegration cracks are a result of the gradual breakdown of concrete, starting with surface scaling and leading to large pieces breaking away. Disintegration often results from chemical attacks like carbonation or sulfate exposure and poor construction practices.
Cause: Chemical attacks or poor-quality aggregates.
Repair Solution: High-strength epoxy injection to reinforce the structure and sealant application to prevent further chemical exposure.
Re-Entrant Corner Cracks in Concrete
Re-entrant corner cracks occur at areas with abrupt changes in geometry, such as around columns, pipe penetrations, sharp corners column bases, pipe penetrations, around rounded objects like manholes, and intersections where slab and wall joints meet. As the concrete dries, uneven shrinkage around these regions creates stress concentrations that lead to cracking.
Cause: Stress concentration around corners or openings.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or, epoxy injection to regain structural strength.
Alkali-Silica Reaction (ASR) Cracks in Concrete
Alkali-Silica Reaction (ASR), also known as concrete cancer, is a harmful chemical reaction between highly alkaline cement paste and reactive silica in aggregates. This reaction produces a hygroscopic gel that absorbs water, expands, exerts internal pressure, and progressive loss of concrete strength leading to map cracking, also known as pattern cracking or alligator cracking. This distinct crack pattern consists of randomly-oriented, web-like cracks on the surface of concrete elements that move in multiple directions.
Cause: Reaction between alkaline cement and reactive silica.
Repair Solution: Polyurethane resin, foam injection, depending on the severity and circumstances, to seal the cracks, prevent moisture ingress, or epoxy injection to regain structural strength.

Choosing the Right Repair Method for many Types of Concrete Cracks

When selecting a repair method for different types of cracks, consider the crack’s cause, size, and impact on the structure:

Polyurethane Foam and Resin Injection: Ideal for flexible sealing in areas with moisture issues and minor movements. Works well for sealing finest cracks as well as large voids or areas prone to temperature changes, due to its expanding and flexible properties.
Acrylate Gel: Perfect for curtain injection and super fine hairline cracks.
Epoxy Injection: Best suited for structural repairs of cracks requiring high strength and load-bearing restoration.

Conclusion

Concrete cracks are an inevitable challenge for any concrete structure due to the diverse range of factors that can cause them, such as environmental conditions, structural issues, and material weaknesses. Understanding the different types of concrete cracks, such as shrinkage cracks, plastic shrinkage cracks, spalling, D-cracking, and more, is crucial for professionals tasked with maintaining the structural integrity of concrete elements.

By recognizing the root causes of these cracks, repair professionals can determine the most effective methods for restoration. For example, structural cracks due to overloading or stress corrosion may require high-strength epoxy injection to restore the original load-bearing capacity, while cracks resulting from freeze-thaw cycles or moisture ingress are better addressed using flexible polyurethane foam injections. For fine hairline cracks or moisture control in large sections, acrylate gels provide a versatile and efficient solution.

Proper selection of repair materials and techniques not only helps in addressing visible damage but also aids in preventing future deterioration, extending the life of the concrete structure. Each crack type demands careful evaluation to choose the right repair approach, ensuring both safety and durability.

Polymer-based injections, including polyurethane resins, foams, acrylates, and epoxies, offer comprehensive solutions for addressing a wide variety of concrete cracks. They provide the versatility to handle anything from superficial fine cracks to deep structural fissures, making them indispensable for professionals committed to maintaining the integrity of concrete elements.

By integrating these repair methods into their toolkit, professionals can confidently tackle any concrete crack repair challenge, ensuring long-term durability and safety for the structures they manage. As always, consulting experts and selecting high-quality products for each specific application remains key to achieving successful and lasting results.

To learn more about how to approach specific concrete crack repair projects, explore our Concrete Crack Repair Quick Guide

Concrete Crack Repair – A Quick Guide to Polymer Grout Injection

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Bridge Crack Repair

Structural Epoxy Injection with Professional Equipment

Structural Epoxy Injection & Equipment for Bridge Crack Repair

Bridges, crucial for transport and commerce, often face damage from harsh environments and heavy traffic, leading to cracks and structural issues.

A cost-effective solution is crucial for maintaining bridge safety, and structural epoxy injection has become a popular method to repair cracks and restore integrity without expensive replacements.

Structural Epoxy Injection & Equipment for Bridge Crack Repair

Bridges, crucial for transport and commerce, often face damage from harsh environments and heavy traffic, leading to cracks and structural issues.

A cost-effective solution is crucial for maintaining bridge safety, and structural epoxy injection has become a popular method to repair cracks and restore integrity without expensive replacements.

Bridge Crack Repair:
Enhancing Structural Integrity with Advanced Epoxy Injection Solutions

Bridges serve as vital arteries for transportation and commerce, constantly bearing the brunt of heavy traffic and exposure to harsh environmental conditions. Over time, this wear and tear can lead to cracks and other structural issues that compromise their integrity. Addressing these problems promptly is critical for ensuring public safety and the longevity of these essential infrastructure elements.

When it comes to repairing bridge cracks, contractors and engineers are turning to cost-effective and efficient solutions like structural epoxy injection. This technique has proven to be an industry-standard for restoring the structural integrity of bridges without the costly and time-consuming process of complete replacements.

Structural Epoxy Injection:
A Reliable and Cost-Effective Solution for Bridge Crack Repair

Structural epoxy injection is a cutting-edge method that involves injecting specially formulated epoxy resins into cracks. These resins fill and bond the gaps, significantly enhancing the strength and stability of the entire structure. Let us explore why epoxy injection is a preferred solution for bridge crack repair.

Structural epoxy injection offers several benefits, including:

Cost-effectiveness: By utilizing structural epoxy injection, unnecessary expenditures on demolishing and rebuilding can be avoided. This approach cuts down on both material and labor costs, making it a budget-friendly solution.
Time savings: Compared to traditional repair methods, structural epoxy injection is significantly faster, leading to minimal disruptions and reduced downtime for bridge traffic.
Versatility: Whether the bridge is made of concrete, steel, or masonry, epoxy injection can effectively repair a wide range of structural materials, making it a versatile choice for diverse bridge designs
Improved strength and structural performance: Beyond simply repairing existing cracks, epoxy injection e3nhances the overall performance of the structure by improving load-bearing capacity of the bridge and providing resistance to future environmental stressors and wear.

Professional Equipment for Successful Bridge Crack Repair

Achieving optimal results in bridge crack repair relies heavily on utilizing professional-grade equipment. SealBoss offers a comprehensive suite of tools and materials to ensure precision and efficiency in structural epoxy injection projects.

SealBoss PA3000 Epoxy Injection Pump

The SealBoss PA3000 epoxy injection pump stands out as a pneumatic powerhouse designed for handling extensive bridge crack repair projects and many linear feet of structural epoxy injection per day. With a large stainless steel reservoir and dual-component capabilities, it delivers a continuous flow of epoxy for uninterrupted injection.

Key features of the SealBoss PA3000 epoxy injection pump include:

User-Friendly Design: Designed with ease of operation in mind, minimal training is needed for contractors to operate this pump efficiently, reducing setup time and increasing productivity.
High performance: Capable of maintaining consistent epoxy delivery throughout the day, the pump enables seamless and efficient crack repairs, especially in high-traffic areas.
Versatility Across Applications: The SB PA3000 can be used for various applications, including crack repair, bonding, and sealing in bridges, tunnels, dams, and other critical civil engineering infrastructures
Durability for Harsh Conditions: With robust construction and a modular design, the SealBoss PA3000 is built for easy maintenance and to withstand tough worksite conditions, ensuring long-lasting reliability.

SealBoss Epoxy Injection Ports

SealBoss® Epoxy Injection Ports provide versatile, durable solutions for various epoxy crack injection needs. Engineered to integrate seamlessly with SealBoss Epoxy systems, they support manual, pneumatic, pump, cartridge, and high-pressure applications. Designed to handle rough surfaces, corner cracks, and high-pressure scenarios, these ports offer specialized options like angled and round base designs for efficient and reliable performance.

Key Benefits of SealBoss Epoxy Injection Ports include:

Versatile Design: Four durable port designs for varied conditions.
Comprehensive Compatibility: Supports manual, pneumatic, pump, cartridge, and high-pressure injection methods.
Specialized Solutions: Angled ports for corners and round base ports for shallow drill holes.
Reliable and Efficient: Seamlessly integrates with SealBoss systems for optimal performance.

Montana Department of Transportation
A Real-World Example: Montana DOT Bridge Crack Repair Restoration Project

The Montana Department of Transportation (DOT) has recently released an extensive work plan covering multiple bridge restoration initiatives, which involve the use of structural strength epoxy resin systems for crack injections.

A leading construction firm was tasked with the responsibility of executing these repairs. The project entails the injection of structural epoxy resin into specified cracks utilizing the SealBoss Epoxy Injection System.

The core elements of this repair strategy included:

SealBoss 4040 LV Structural Epoxy Resin: A low-viscosity, structural strength resin formulated for deep penetration into narrow cracks.
SealBoss 4500F Crack Seal and Port Setting Paste: Ensuring secure adhesion and setting of injection ports.
SealBoss Tri-Base Surface Mount Injection Ports: Facilitating precise injection of resin into targeted areas.
SealBoss PA3000 Epoxy Injection Pump: Delivering consistent and reliable performance throughout the project.

During this project, SealBoss regional manager Chris Conderre conducted a detailed on-site training session covering the operation and maintenance of the SealBoss PA3000 epoxy injection pump.

The training also emphasized the correct usage of accessories such as static mixers, Tri-Base Plastic Epoxy Injection Surface Mount Ports, and all connecting equipment required establishing a flawless union between the applicator and the substrate.

Conclusion

Reliable Bridge Crack Repair Solutions for the Future

Bridge crack repair using structural epoxy injection is a cost-effective and dependable approach that meets the needs of modern infrastructure maintenance, contractors and engineers.

By employing advanced equipment like the SealBoss PA3000 epoxy injection pump, along with high-quality materials such as the SealBoss 4040 low viscosity structural epoxy resin and the SealBoss 4500F crack seal and port setting paste, contractors can achieve exceptional repair results while minimizing downtime and costs.

Furthermore, proper training and education on the usage of these advanced tools and techniques are critical in achieving the desired outcomes.

As the demand for reliable and cost-effective bridge crack repair solutions continues to grow, it is essential for contractors and engineers to stay updated with the latest advancements in technology and materials. By adopting innovative methods like structural epoxy injection and utilizing state-of-the-art equipment, industry professionals can ensure the longevity and safety of bridges and other vital infrastructure components.

In summary, bridge crack repair using structural epoxy injection and advanced equipment like the SealBoss PA3000 epoxy injection pump offers numerous benefits. By adopting solid injection techniques and professional equipment, contractors and engineers can ensure the safety, reliability, and longevity of bridges and other critical infrastructure components, ultimately benefiting the communities they serve.

Structural Epoxy Injection System Products Used

By leveraging these innovative techniques and equipment, contractors can confidently tackle bridge crack repair projects, reinforcing the durability and safety of crucial transport infrastructure for years to come.

Related Links

SealBoss Surface Mount Epoxy Port Selection

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Elevator Pit Waterproofing

Elevator Pit Waterproofing: Essential Solutions for Leak Sealing

Introduction to Elevator Pit Waterproofing

Elevator pit waterproofing is vital for maintaining the structural integrity and operational safety of hydraulic elevator systems, particularly in commercial and industrial buildings. Polyurethane grout is a highly effective solution for elevator pit leak sealing and waterproofing. When injected into cracks, joints, or structural defects, polyurethane grout reacts with water to form a solid, impermeable barrier. This foam expands to fill voids, cutting off all water entry points and creating a long-lasting, watertight seal. Its application is especially beneficial in elevator pits, where complex leak challenges are often present, offering a durable and reliable solution that enhances the overall safety and longevity of the system.

The Importance of Elevator Pit Maintenance

Elevator pits are critical components in hydraulic elevator systems, yet they are often overlooked. These pits play a key role in ensuring the elevator’s safety, reliability, and efficiency. Regular maintenance of elevator pits is essential to prevent operational failures and safety risks, particularly those associated with water ingress.

Water Leakage: A Critical Concern

Water leakage in elevator pits, whether from groundwater intrusion or pipe leaks, poses significant risks to both the elevator system and building compliance. Accumulated water can mix with hydraulic oil, creating hazardous environmental and safety conditions. Without effective waterproofing, this combination can result in environmental contamination, fire hazards, and regulatory non-compliance.

Risks of Ignoring Water Leakage

Ignoring water leakage in elevator pits can lead to severe consequences:

Environmental and Safety Hazards
The mixture of hydraulic oil and water creates contamination and potential fire risks
Equipment Damage
Prolonged exposure to water can lead to corrosion and failure of key elevator components, increasing maintenance costs and causing system downtime
Legal and Regulatory Implications
Non-compliance with environmental standards due to oily water leakage can result in fines, legal action, and costly cleanup processes

Taking prompt action to seal leaks and waterproof elevator pits is critical to avoiding these risks.

Polyurethane Grout: The Effective Elevator Pit Waterproofing Solution

Polyurethane grout is widely regarded as one of the most effective materials for elevator pit waterproofing. This liquid polymer reacts with water to form an expanding foam that fills voids and creates a strong, watertight seal. Its fast-setting nature and durability make it ideal for commercial settings that require minimal downtime.

Key Benefits of Polyurethane Grout for Elevator Pit Waterproofing

Durability
Provides a long-lasting, impermeable seal
Cost-Effectiveness
Reduces long-term maintenance costs due to its longevity
Environmental Compliance
Manages oily water effectively, helping to meet environmental regulations
Minimal Disruption
Quick installation process allows for efficient repairs with minimal disruption to building operations

Regular Maintenance and Preventative Strategies

To ensure the long-term success of elevator pit waterproofing, regular maintenance is essential. Proactive strategies help prevent water accumulation and extend the life of the elevator system.

Key Maintenance Practices Include

Regular Inspections
Early detection of water ingress, corrosion, and hydraulic system issues
Cleaning and Debris Removal
Prevents drainage blockages that can lead to water buildup
Drainage System Checks
Ensures proper function and identifies weak points before they cause significant damage
Seal Integrity Checks
Ensures that the waterproofing seals remain effective over time

In addition, incorporating preventative measures such as water detection systems, climate control, and proper landscaping around the elevator pit can further protect against water-related issues.

Selecting a Waterproofing Professional for Elevator Pits

Choosing the right contractor for elevator pit waterproofing is crucial for achieving long-lasting results. When selecting a waterproofing expert, consider their experience, customer reviews, and transparency in pricing.

Important Factors to Consider:

Proven Track Record
Look for contractors with successful experience in elevator pit repairs.
Positive Reviews
References and reviews from previous clients offer insight into the contractor’s reliability and quality of work.
Transparent Pricing
Detailed quotations and clarity on pricing help prevent unexpected costs.
Expertise in Elevator Pit Issues
A contractor who understands the specific challenges of elevator pits can provide tailored solutions, detailed work plans, and warranties

A long-term relationship with a reliable waterproofing contractor enhances maintenance strategies and ensures ongoing support.

Expert Elevator Pit Repair with SealBoss

SealBoss is a trusted provider of elevator pit waterproofing solutions, offering expert technical guidance and connections to experienced contractors. With SealBoss, property owners and managers can ensure that complex elevator pit leaks are handled efficiently and cost-effectively.

SealBoss can assist in hydraulic elevator pit repairs

Technical Expertise
Customized sealing solutions based on the specific needs of your elevator pit.
Contractor Referrals
Access to skilled contractors with proven experience in elevator pit repairs.
Long-Term Partnership
Ongoing technical support for cost-effective and environmentally friendly waterproofing solutions.

Partnering with SealBoss provides building managers with the confidence that their elevator pit waterproofing needs are addressed professionally and efficiently.

Summary

Elevator pit waterproofing is essential to maintaining the safety, efficiency, and regulatory compliance of hydraulic elevator systems. Water leakage poses serious risks, and polyurethane grout is a proven solution for creating durable, watertight seals. Regular maintenance, including inspections and cleaning, is crucial for long-term protection, and selecting the right waterproofing professional ensures the success of the repair process.

For expert assistance with elevator pit waterproofing, contact SealBoss today at 714-662-4445 for tailored solutions and professional support.

Elevator Pit Waterproofing and Leak Sealing Case Study

On-Site Elevator Pit Waterproofing Injection Training in Nebraska

SealBoss provided on-site support and training to a contractor performing a leak-sealing repair in the elevator pit of a multi-family housing complex in Nebraska. The elevator pit was plagued by persistent water pooling, leading to efflorescence and progressive erosion of the surrounding walls. – More information on effloresence, click here – Without immediate waterproofing intervention, serious structural damage was inevitable.

Identifying the Problem

The main issue involved water seepage through the cold joints between the floor and the poured-in-place wall. One of the walls was constructed with masonry blocks, highlighting the mix of construction methods used, which further complicated the waterproofing process.

The Solution: Polyurethane Foam Injection

After assessing the site, the SealBoss team recommended using SealBoss 1510 Water Stop Foam, in combination with the P2002 Injection System. This high-performance foam was chosen for its ability to expand and fill voids, creating a watertight seal. Its compatibility with the P2002 system allowed for high-pressure injection, ensuring deep penetration and a more effective seal.

Preparing for Injection

Due to the active status of the elevator, scheduling was critical. The contractor worked closely with the on-site technician to temporarily suspend the elevator’s operation, ensuring safety during the waterproofing process

Since original blueprints of the elevator pit were unavailable, the team first drilled test holes to investigate the nature of the cold joint.

These preliminary holes were flushed with water using the BGUN1500 Hand-Operated Pressure Pump and 13-100AL ½” Aluminum Injection Packers to confirm the flow of material along the joint and clean out the drill holes.

The pre-injection served a dual purpose. Besides verifying travel along the joint, it also functioned as a cleaning mechanism, flushing out the drill hole and priming the crack for the injection of the hydro-active 1510 Water Stop Foam.

Injection Process

The successful pre-test led to the strategic placement of 13-100 AL injection packers positioned with approximately 18” spacing. These packers were then drilled around 4” – 6” from the wall through the floor, following the well-established 1, 2, 3, 45-Degree Guideline drilling method.

In the corners, packers were placed about 8” from the corner point and drilled directly into the corner at a 45-degree angle through the floor. Additional packers were set 8” from the adjacent wall and 4” – 6” from the wall face where the joint would be injected.

Once the packers were firmly installed, the injection process began. There was an immediate take of material and travel. The off-gassing from the chemical reaction was noticeably visible several feet from the injection point, signaling the foam’s effectiveness. Shortly thereafter, the cold joint started to resist the resin, indicating the commencement of the curing process. As the foam reacted and solidified, smaller shrinkage cracks became apparent.

Successful Completion

Upon completing the injection, all cracks and cold joints were successfully sealed. This allowed the elevator to return to service with minimal disruption to the building’s occupants. The project highlighted the effectiveness of SealBoss 1510 Water Stop Foam and the importance of strategic planning and execution in elevator pit waterproofing.

Elevator Pit Waterproofing – Key Takeaways from the Project

This endeavor showcases the expertise of SealBoss in effectively managing water leakages in complex environments. It also demonstrates how the proper application of specialized materials, such as SealBoss 1510 Water Stop Foam, can ensure durable and reliable results. The project underscores the importance of adequate planning and coordination in such operations.

Additionally, this experience emphasizes the crucial role of pre-injection tests in ensuring the success of the actual repair. By confirming travel along the joint and cleansing the drill hole, the process ensured a successful application of the Water Stop Foam System.

Conclusion

Elevator pit waterproofing requires careful planning, testing, and the right materials to ensure success. SealBoss provided valuable support and expertise in addressing the water intrusion challenges at this site, delivering time-efficient and cost-effective solutions.

At SealBoss, we are committed to equipping contractors with the knowledge and tools they need for effective leak-sealing and waterproofing projects. Supported by a skilled technical team, we stand ready to assist you with any challenges you may face in the field.

For more information on elevator pit waterproofing or to schedule a consultation, contact SealBoss today. Our team of professionals is here to guide you through every step of your waterproofing project, ensuring long-lasting results and minimal downtime.

Contact Us by Phone: 714-662-4445

“We are committed to ensuring that everyone on the jobsite is well-versed with our systems and possesses the ability to pass on this knowledge to the next person. Supported by our adept technical support team, we stand ready to assist you with any queries you might encounter.

If you’re interested in gaining insights from a seasoned contractor regarding elevator pit repairs, we would highly recommend checking out our podcast through the link provided below.”

Technical Sales Team

Elevator Pit Waterproofing
How To Stop and Seal Active Water Leaks
Podcast

Elevator Pit Waterproofing

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Manhole Repair – Leak Sealing Injection

Manhole Repair
Leak Sealing Injection

Manhole Repair Systems

SealBoss provides comprehensive system solutions aimed at rehabilitating manholes and repairing leaks, effectively sealing water leaks occurring via cracks, joints, and annular pipe intrusions. Leveraging our repair systems allows for a considerable extension of a manhole structure’s service life, all the while maintaining cost-effectiveness.

Addressing Manhole Damages and Blockages through Inspections and Repairs

Mitigating Infiltration and Inflow (I/I) in Manholes

Manholes are frequently subjected to I/I, which manifests as infiltration through cracks and joints, and inflow of groundwater. These occurrences can significantly elevate treatment costs and contribute to environmental pollution. Furthermore, they may trigger soil and groundwater contamination, sinkholes, and damage to roads and structures.

To prevent and correct these issues, it is crucial to conduct regular inspections and necessary repairs on manholes.

SealBoss provides a selection of cost-effective systems designed to repair manholes, successfully addressing typical and common forms of damage.

If left untreated, deteriorating and leaking manholes can result in substantial, highly expensive damage to both the environment and infrastructure.

Understanding Sanitary Sewer Overflows (SSOs)

Sanitary sewer overflows (SSOs) represent a pressing environmental and public health issue. These overflows, saturated with untreated sewage, act as conduits for bacteria, viruses, and other pathogens.

At times, sanitary sewers may inadvertently discharge untreated sewage, leading to what’s termed as an SSO. Such overflows can not only taint our water sources, resulting in significant water quality degradation but also backflow into residential areas. This not only damages property but also poses a substantial health risk to the public.

Factors Leading to SSOs:

Blockages in the sewer lines
Ruptures or breaks in the sewer lines
Structural defects that permit storm water and groundwater to inundate the system
Power outages affecting the sewage system’s operations.
Flaws in the sewer system’s design
Acts of vandalism disrupting the system

According to data from the Environmental Protection Agency (EPA) as of September 2023, it’s estimated that the U.S. experiences between 23,000 to 75,000 SSO incidents annually. This figure excludes sewage backups into buildings, underscoring the gravity of the issue.

Identifying Common Manhole Failure Causes

Several common causes of manhole failure include:

Infiltration via precast joints
Leakage from precast manhole rings
Groundwater intrusion through cracks
Infiltration via mortar joints
Cracks resulting from shifting soil, traffic load, or soil expansion
Fissures due to micro-biological corrosion

Manhole Repair Using Injection Grout

Addressing Different Types of Manholes – Brick, Precast and Combination Manholes

SealBoss Injection Systems are designed to accommodate manholes constructed from a range of materials.

Introducing the ealBoss Seal-Oakum / Oakum Soakum Technique

e recommend having SealBoss Seal-Oakum on-site to effectively plug larger voids and joints. The Oakum Soakum Technique is explained here.

Understanding Basic Repair Procedures

Repairing Manhole Leaks through Larger Cracks and Brick Construction

Here are the steps:

Drill through the structure to the outside of the manhole to fill any voids and crate a curtain behind the structure
Install Injection Packers
Prior to injection, repair wide pipe penetrations using Seal-Oakum
Start injection at the bottom

Adressing Manhole leaks through Precast Manhole Rings / Joints

Follow these steps:

Drill injection holes into the manhole rings approximately every 60 degrees
Install six injection packers. In case of severe leaks, more drill holes/packers may be required
Prior to injection, repair wide pipe penetrations and broad ring joints using Seal-Oakum
Start injecting process from the bottom

Manhole Inspections and Preventive Maintenance – The Key to Longevity

Regular inspection of manholes is crucial to identify issues early and prevent them from escalating. Implementing a preventive maintenance program for manholes can prevent costly repairs and extend their lifespan. Regular cleaning, sealing of cracks, and routine inspections can ensure their proper function and prevent I/I.

Innovative System Solutions with SealBoss

SealBoss provides a wide-ranging selection of manhole repair solutions. This includes a variety of injection systems, water-reactive grouts, structural resins, SealBoss Seal-Oakum, along with injection packers and pumps. These tools are designed to confront a broad spectrum of manhole issues, proving their effectiveness across diverse manhole designs and construction materials.

Conclusion

Addressing the issue of manhole damage is essential for efficient sewage management, environmental preservation, and safeguarding infrastructure. Regular inspections, timely repairs, and effective maintenance procedures can help manage these concerns. At SealBoss, we provide innovative and economical solutions tailored to meet these needs.

Manhole Repair System Example

Experience Hands-On Training with SealBoss P2002 Pro Kit System

We provide comprehensive, hands-on training in the application of high-pressure polyurethane water stop foam injection, using the SealBoss P2002 single-component injection pump, or any other SealBoss Injection System specified.

The equipment and materials used in this training include SealBoss 1510 Water Stop Foam, SealBoss AL 13-100 (½”) high-pressure packers, and SealBoss Seal-Oakum.

During the training, a SealBoss technical expert will be present on-site to provide direct support to the contractor. Our primary goal is to ensure that your work crew gains confidence and comfort in using the application.

TOur training covers the full spectrum of the application process. This includes instruction on pump usage, packer installation, the detailed injection procedure, and the clean-up process. We also educate repair crews on how to apply catalyzed resin-soaked SealBoss Seal-Oakum effectively.

If you have any questions regarding manhole repair, our team of proficient SealBoss representatives is ready to assist. Feel free to contact us to schedule an on-site consultation and comprehensive training on injection systems.

Manhole Repair Crew Training

Manhole Repair System Example

SealBoss Manhole Repair

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Epoxy Injection Preparation Tips

Introduction:

Epoxy injection is a highly effective, polymer delivery method through a pumping system for repairing cracks in concrete structures. This process involves sealing all accessible sides of a crack and bonding them with a high and strength, low-viscosity epoxy resin by pressure injection.

Proper preparation is crucial for successful epoxy injection. It begins with cleaning the crack thoroughly, surface sealing the crack, and installing surface mount Tri-Base ports along the crack at specific intervals with a fast setting, non-sag epoxy paste. Following these preparation steps ensures the epoxy resin can penetrate and bond the cracked concrete effectively, restoring its structural integrity in the process.

Epoxy Injection Preparation Tips – Installing Surface Mount Tri-Base Ports

Epoxy Injection is a typically a low pressure to medium pressure crack filling solution where all sides of the crack are sealed and structurally glued together with a high strength low viscosity Epoxy Resin.

To prep for injection, the crack must be cleaned with a wire brush and all dust removed. Any surface contaminants, such as oils or paints, must be removed for the epoxy paste-over to bond properly. If available, use clean compressed air to remove any dust and debris. For best results perform epoxy injection preparation when the crack and surface are dry. Any water seeping from the crack should be stopped prior to epoxy injection. For sealing water bearing cracks click here.

Once the surface is cleaned, the Surface Mount Epoxy Injection Ports are installed directly over the crack 6” – 8” (15-20 cm) apart. The finer the crack, the narrower the spacing should be.

Shown in this example are standard surface mounted Tri-Base ports, however corner ports and ½” drill in ports are available for specific applications.

Tri-Base Ports are mounted by placing epoxy on each of the three tabs on the base of the port. Once ports are placed, the non-sag paste is applied to both sides of the wall, sealing the crack.

When applying paste, the mixed material should be applied generously at roughly 1/8” (3-4 mm) thickness, and mounded up around each port to approximately 1/4″ (6-7 mm) thick or more using a putty knife or other suitable tool. The paste-over should be a minimum of 1 inch (3 cm) wide along the crack. If the paste is not applied thick enough it may crack and epoxy will escape during injection, preventing proper penetration and epoxy flow within the crack itself. Note: The length of time needed for the epoxy paste to fully cure varies with ambient and substrate temperature.

“ Once ports are placed, the non-sag paste is applied at roughly 1/8” thickness and mounded up around each port. If the paste is not applied thick enough it may crack open and epoxy will escape during injection. “

SealBoss Technical Support Team

After the surface paste has hardened, structural strength epoxy resin can be injected starting at the lowest port on the crack, for horizontal or lateral cracks start on one side and work your way over.

Because the crack has been sealed on both sides, the next port in line will need to have the cap removed to allow the displaced air to escape. Once the Epoxy resin can be seen escaping from that next port injection stops, the applicator is disconnected from the injected port and the port is capped.

The applicator is then connected to the next port and the process is repeated. Once the crack has been fully injected and the Epoxy resin has cured, ports and paste can be ground off for aesthetics.

Epoxy does not Flow as Expected – Troubleshooter

Injected crack is not continuous or the area being injected is saturated
Crack is blocked by debris or cured epoxy paste
Surface mount port does not align with the crack
Epoxy has cured in injection nozzle, port or crack
Epoxy resin viscosity too high

Epoxy injection is an efficient and economical method of repairing cracks in structural concrete walls, slabs, columns and piers. If applied in compliance with all recommendations and specifications, high strength epoxy is capable of restoring concrete structures to their strength prior to crack development.

If at any time during your epoxy injection preparation and any other repairs you encounter issues that can’t be resolved, please call us here at SealBoss for support – 714-662-4445. Your technical representative will gladly be of assistance.

At SealBoss, we offer full system solutions for Structural Epoxy Injection Repairs including Electric and Pneumatic Pumps, various Ports, Epoxy Resins, Paste and Cartridge System.