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Pressure Grouting

Pressure Grouting with Polyurethane Chemical Grouts and Injection Lances

Introduction:

Pressure grouting is an essential technique in construction and civil engineering, enhancing the strength and stability of various structures by stabilizing the subsoil. This method involves injecting grout into voids or cracks in concrete, soil, or rock to fill them and improve their load-bearing capacity. Among the many types of grouts available, polyurethane grouts, a.k.a. chemical grouts, stand out for their unique properties and versatility. In this article, we will explore the intricacies of pressure grouting, focusing on the benefits and applications of polyurethane grouts, as well as the use of injection lances for optimal grout delivery.

What is Pressure Grouting?

Pressure injection grouting in geotechnical applications involves injecting grout under pressure into strata of soil to strengthen the soil by compaction, adhesion and by filling voids, cavities, and fissures. This technique is commonly used for:

Foundation Stabilization: Strengthening the foundations of buildings and other structures
Soil Stabilization: Enhancing the load-bearing capacity of soil
Leakage and Erosion Control: Sealing leaks in soils and structures such as earthen dams
Void Filling: Filling cavities or voids in rocks or soil

The success of pressure grouting depends on the type of grout used, the injection pressure, and the specific site conditions.

PU Grout Systems for Pressure Grouting Applications

Chemical Grouts

Chemical grouts are fluid materials that transform into a solid or gel state after injection, providing exceptional sealing and strengthening properties. Key features of polyurethane grouts include:

Versatility: Chemical grouts can be customized for various conditions, making them ideal for a wide range of applications
Penetration: Due to their low viscosity, chemical grouts can penetrate fine cracks and pores that other grouts might not reach
Rapid Setting: These grouts can set quickly, which is beneficial for time-sensitive applications
Longevity: Once set, chemical grouts offer long-lasting stability and resistance to environmental factors

Applications of Polyurethane Grouts

Permeation Grouting: Used to improve the stability and load-bearing capacity of soils by filling the voids and pores within the soil matrix
Foundation Underpinning: Supports and stabilizes existing foundations by filling voids and compacting loose soil
Leak Sealing: Effective in sealing leaks in soil, such as around underground structures and pipelines
Void Filling: Quickly fills voids in soil, preventing settlement and ensuring stability

Injection Lances for Optimal Grout Delivery

Permeation Grouting Injection Pipes, also known as Grout Injection Lances or Soil Lances, are designed to transport polyurethane grout deep into various soil types. At SealBoss, our injection lances come in distinct versions to provide the best possible grout delivery for different soil compositions.

Advantages of Injection Lances

Ease of Use: Ram injection lances penetrate soil without the need for large equipment, making them user-friendly and efficient
Depth Control: Injection lances can be combined to reach specified injection depths, ensuring precise delivery of grout
Controlled Flow: The lack of a peripheral gap after installation permits controlled flow of injection grouts, enhancing effectiveness

Applications of Injection Lances

Lower Depth Applications: Ideal for penetrable soils at lower depths
Permeation Grouting: Effective for improving soil stability by ensuring even distribution of grout
Soil Stabilization: Enhances the stability of loose or sandy soils
Foundation Underpinning: Supports and stabilizes foundations by injecting grout at specific depths
Grout Curtain Injection: Creates barriers to control water flow in soil
Lifting Applications: Useful for lifting and stabilizing slabs and foundations
Industrial Foundation Stabilization: Stabilizes industrial machine foundations and slabs.

Choosing the Right Polyurethane Grout and Injection Method for Your Project

Selecting the appropriate polyurethane grout and injection method for your pressure grouting project depends on several factors, including the nature of the soil, the specific requirements of the project, and the environmental conditions. Using injection lances can enhance grout delivery, particularly in soil stabilization and permeation grouting applications.

Conclusion

Pressure grouting with polyurethane grouts, combined with the use of injection lances, offers a versatile and effective solution for soil stabilization and other related challenges. By understanding the unique properties and applications of polyurethane grouts and the advantages of injection lances, engineers and contractors can make informed decisions to ensure the stability and longevity of their projects.

At SealBoss, we provide high-quality grouting solutions and equipment tailored to meet the diverse needs of our clients. Whether you are dealing with foundation issues, soil stabilization, or leak sealing, our range of polyurethane grouts and injection lances can help you achieve optimal results.

For more information on our products and services contact our expert team today!

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Irrigation District Canal Sealing

Injection Technologies for Irrigation District Canal Sealing

Introduction:

Irrigation canals are the lifelines of agriculture, channeling water across vast landscapes to nourish crops and sustain farming operations. Yet, the integrity of these canals is under constant threat from leaks and seepage, challenges that not only compromise water efficiency but also the very foundation of our agricultural infrastructure. In response to these challenges, innovative solutions such as polyurethane grout injection and grout-impregnated oakum applications have emerged as effective methods for canal sealing and repair.

Polyurethane grouts, oakum, and injection lance technologies represent significant advancements in the sealing and maintenance of irrigation district canals, addressing both traditional challenges and modern needs.

Polyurethane grout, with its expansive properties, offers a dynamic solution by filling cracks and voids with a durable foam that cures into a watertight seal, reinforcing the structural integrity of canals and minimizing water loss.

Oakum, a fibrous material impregnated with grout, provides a versatile and environmentally friendly option for sealing irregular or wide cracks, combining the resilience of natural fibers with the sealing power of modern grout.

The injection lance technique, used in both curtain and probe grouting, allows for precise application of materials, targeting specific seepage paths and ensuring a comprehensive barrier against water loss. Together, these methods enhance the efficiency of water delivery systems, safeguard the structural stability of irrigation canals, and contribute to the sustainability of agricultural practices by conserving water and reducing maintenance costs.

Polymer Grout Systems for Irrigation District Canal Sealing

The Challenge of Leaking Canals

The network of irrigation canals that crisscross agricultural regions is vast and complex. Managed by various entities, including the Bureau of Reclamation, this infrastructure spans thousands of miles and is crucial for the delivery of water to farmlands. However, the aging of these canals, combined with natural and mechanical damages, presents a continuous battle against leaks and seepage. Such issues not only lead to water loss but also pose significant risks to the structural integrity of canals, potentially resulting in erosion, sinkholes, and even catastrophic breaches that can have far-reaching impacts on agriculture and nearby communities.

Advanced Solutions for Irrigation District Canal Sealing

Polyurethane Grout Injection

Polyurethane grout injection stands out as a modern solution for addressing irrigation canal leaks. This method involves injecting a liquid polymer, which expands upon contact with moisture, into cracks and voids, thereby creating a durable, watertight seal. The rapid curing time of polyurethane grout minimizes downtime in water delivery, and its flexibility allows the structure to accommodate future movements, significantly reducing the likelihood of recurrent leaks.

Using NSF Drinking Water Contact Certified Polyurethanes

NSF-approved polyurethane grouts are essential in irrigation canal sealing because they meet stringent safety standards by the National Sanitation Foundation (NSF) and the American National Standards Institute (ANSI). This certification ensures these materials are safe for use in environments in contact with potable water, preventing contamination. SealBoss NSF/ANSI/CAN 61 Certified Products undergo rigorous testing to ensure they do not leach harmful contaminants, making them a reliable choice for maintaining the purity of water systems and complying with regulatory requirements for public health and environmental protection.

Addressing Seepage with Curtain and Probe Grouting

In addition to direct crack sealing, addressing pervasive seepage is critical for maintaining the functionality and integrity of irrigation canals. Techniques such as curtain and probe grouting play a crucial role in this context. Curtain grouting involves creating a grout barrier along the canals wall to block water pathways into the soil, while probe grouting with injection lances targets specific seepage paths, allowing for precise application and minimal environmental disturbance.

Steel Injection Lances, tailored for specialty grouting applications, facilitate the delivery of various polymer solutions directly into the soil. Their primary function is to inject these polymers deep into the soil to enhance its properties. By doing so, they significantly increase the soil’s strength, decrease its permeability, and improve its overall stability, making them indispensable tools for polymer leak sealing and soil stabilization efforts.

Sealing Joints in Concrete Canals

Concrete-lined canals face the challenge of leaking panel joints. SealBoss 1510 Water Stop Foam, used in conjunction with SealBoss Oakum, provides an effective solution for sealing these joints. The combination of these materials forms a water-impermeable barrier, ensuring the longevity and functionality of lined canal systems.

Grout-Impregnated Oakum

Grout-impregnated oakum represents a blend of traditional and modern repair techniques. Utilizing SealBoss Oakum—a fibrous material derived from old hemp ropes—saturated with specially formulated grout, this method can effectively be used to seal wider cracks and seals cracks and joints in irrigation canals. The natural flexibility of oakum, combined with the strength of the grout, offers a resilient barrier against water seepage, making it especially suitable to seal irregular and wide cracks, as well as leaking joints.

Soil Cavity Filling and Sealing

The stability and functionality of irrigation canals are compromised not only by the effects of soil erosion and washouts but also by the presence of wildlife, which presents unique and significant challenges.

Animals like gophers, muskrats, and beavers can create tunnels and burrows in canal berms, potentially leading to significant water loss and instability. Sealing these wildlife burrows with quick expanding SealBoss polyurethane foam grout not only prevents water leakage but also deters animals from re-establishing their burrows, thereby protecting the canal and adjacent agricultural lands from unintended water damage.

The Importance of Professional Expertise

While some maintenance tasks pertaining irrigation district canal sealing can be handled through do-it-yourself approaches, the complexity of canal repair often necessitates professional expertise. Companies like SealBoss offer comprehensive guidance and technical support tailored to the unique challenges of canal maintenance. Their referrals to experienced contractors ensure that repair projects are executed effectively, safeguarding this critical infrastructure against the myriad challenges it faces.

Conclusion

The sustainability of our agricultural system relies heavily on the integrity of irrigation canals. Through the application of advanced sealing techniques and materials, combined with professional expertise, we can ensure the efficient delivery of water to farmlands, preserving the foundation of agricultural productivity and environmental stewardship for future generations.

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Structural Epoxy Repair System

Related Article

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Seawall Repair with Polyurethane Foams | Plural Component vs Single Component Foam

Seawall Repair with Polyurethane Foams
Plural Component vs Single Component Foam

Concrete Solutions Since 1988

This article contains an excerpt from the “SealBoss Concrete Solution Network Podcast – Seawall Repair | Bulkhead Repair | Erosion Control | Permeation Grouting”, featuring Jerald Sargent of Slabjack Geotechnical. Jerald has over 30 years of experience in the slabjacking and geo-technical industry. If you’d like to listen to the complete conversation, an audio version of the podcast is posted at the bottom of the article.

In this podcast we talk about the use of single and plural component foams for seawall repairs.

Both foam types have their place in seawall repair but the contractor needs to have a good understanding of their respective characteristics and area of application.

Single component (accelerator activated) foams offer outstanding crack sealing and good soil penetrating, permeation and soil aggregate stabilizing properties.

Plural component foams are excellent void fillers, support and lifter foams, predominantly used for slabjacking and slab lifting.

Single Component Foams are Preferred for Soil Permeation and Soil Consolidation — Plural Component Foams are Good for Filling Voids in Certain Applications

In the following Jerald discusses the use and limitations of Plural Component Foam.

Jerald Sargent: …Sometimes plural components make a lot of sense… where there’s obvious gaps behind the wall or maybe in a you know in a big boulder type of Bulkhead where they just use big rock rather than poured concrete. So plural components are good for filling voids in there and helping to lock [larger] aggregate together…

In most poured concrete walls we stay away from plural component simply because of the risks associated with it.

Going right along with that, one of the things that plural component is not appropriate for is injecting underneath the walls…

There’s virtually no permeation [into the soil] involved with plural component polyurethanes. It’ll [the soil] take up, it’ll absorb a little bit push through a little bit of that but it will not do it to the point where you have a solid structure built below the wall itself.

And I think that it is really important to understand the real limitation of the plural component polyurethane. And we use hundreds of thousands of pounds of a year in our slapjack in operation.

But it really isn’t appropriate in most cases to do a poured concrete wall [soil] stabilization.

To learn more about seawall repair and single and plural component foams you may want to listen to the podcast below.

Looking for a seawall repair contractor? – Call us at 714-662-4445.

Seawall Repair with Polyurethane Foam

Technical Podcast for the Infrastructure Repair Industry

A Concrete Solutions Network / Sealboss ® Production Podcast ©

A Conversation Between Two Industry Professionals
Episode 3

How To Podcast:
Seawall Repair | Bulkhead Repair | Erosion Control | Permeation Grouting

Podcast Details Here

SealBoss Polyurethane Grouts

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Polymer Soil Stabilization

A Modern Solution to Age-Old Challenges

The world of civil engineering is no stranger to the trials posed by unstable soils. From erosion and improper compaction to the effects of freeze-thaw cycles and the decomposition of organic materials, these factors can seriously compromise the structural integrity of any project. The result? Soils that shift and refuse to stay anchored, posing significant risks to structures and their foundations. For geotechnical engineers, the challenge has always been to find innovative solutions that not only reinforce the ground but also restore its ability to bear loads effectively.

Polymer soil stabilization, a cutting-edge soil injection system turn the tables on unstable terrains. Soils that were loose and unmanageable are transformed into cohesive, fortified masses. How it works: Polymeric resins, with their unique properties, seep into porous soils, filling gaps and compacting even the most stubborn terrains. This not only halts the processes of subsidence and erosion but also prevents the migration of fine particles. SealBoss offers polymer soil stabilization solutions that meet the highest industry standards.

Polymer Soil Stabilization

A Modern Solution to Age-Old Challenges

Polymer soil stabilization, a cutting-edge soil injection system turn the tables on unstable terrains. Soils that were once loose and unmanageable are transformed into cohesive, fortified masses. How it works: Polymeric resins, with their unique properties, seep into porous soils, filling gaps and compacting even the most stubborn terrains. This not only halts the processes of subsidence and erosion but also prevents the migration of fine particles. SealBoss offers polymer soil stabilization solutions that meet the highest industry standards.

The Mechanics Behind Polymer Foam Stabilization:

Permeation and Matrix Formation: The polymers permeate through loose sediments, soils, and sands, binding them together into a cohesive matrix forming a solid structure.
Erosion Control and Water Displacement: By displacing water from areas affected by erosion, they prevent further deterioration of the soil.
Void Filling and Void Management: Polymers effectively fill spaces left by decomposed organic matter or resulting from inadequate soil compaction.
Strengthening and Adhesion: Their unique ability to adhere to soil particles ensures the creation of a fortified substrate.

Performance Highlights of Polymer Soil Stabilization:

Polymer soil and sand stabilization efficiently treats unstable soils and sands in-situ, eliminating the need for excavation. These polymers compact treat loose or unstable soils, enhancing their structural strength and offering long-term stabilization. By permeating loose sediments, displacing water from eroded areas, and filling voids, they create a fortified soil matrix that resists erosion and subsidence. Additionally, NSF/ANSI/CAN 61 certification of the specific polymer foam resins ensures safety for potable water contact, emphasizing both their efficacy and environmental commitment. Geotechnical Engineers, kindly reach out to our technical team for detailed specification guidance and assistance.

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Grout Injection Lances

Stainless Steel Grout Injection Needles

Stainless Steel Injection Needles

SealBoss Injection Needle for specialty grouting applications and product delivery into soil substrate, through small holes, Oakum Soakum Injection Technique and more. Suitable for PU, EP, Polyacrylate, and Silicate grouts.

Polymer Soil Stabilization

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Concrete Leveling Polyurethane Foam

Introduction to Concrete Leveling Polyurethane Foam

Concrete leveling polyurethane foam offers an innovative solution for maintaining the integrity of concrete slabs. This versatile material addresses various underlying issues that can cause slabs to become uneven or unstable.

Erosion

Erosion is a primary cause of concrete slab instability. It occurs when water washes away the soil beneath the slab. This can happen due to several factors:

Improper Property Slope: Water directed towards the slab due to a slope can erode the soil
Gutter Runoff: Inadequate drainage systems can cause water to seep into the soil
Sewer Line Breakages: Wastewater from broken sewer lines can contribute to soil erosion

Substandard Soil Compaction

The foundation of a concrete slab depends heavily on the compaction of the underlying soil. Proper soil compaction reduces the space between soil particles, creating a solid base for the slab. If this process is skipped or done incorrectly, the slab is prone to sinking over time.

Expansive Soil

Expansive soils, which swell when they absorb water and shrink as they dry, pose a significant challenge to concrete slabs. This cycle of swelling and shrinking can cause the slab to lift, sink, and eventually crack, compromising its stability and appearance.

Tree Roots

Large trees near concrete slabs can also affect their stability. Tree roots can absorb water from the soil under the slab, causing the soil to shrink. Additionally, as these roots decay after the tree’s death, voids can form beneath the slab, leading to further instability.

Understanding the Causes

Understanding the factors that lead to concrete slab issues highlights the importance of using concrete leveling polyurethane foam. This solution not only addresses the root causes of slab instability but also provides a long-lasting fix, ensuring the durability and safety of concrete structures.

The Repair Process Overview

Concrete leveling foam, a two-component, high-strength polyurethane material, is pumped beneath sinking concrete slabs, sidewalks, driveways, or patios. It provides a strong foundation by filling the void and elevating the sunken concrete while expanding. The process is also known by various terms like polyjacking, concrete lifting, slab jacking, foam jacking, foam lifting, all achieving the same goal.

The Process in Detail

Leveling and Lifting: Utilizing the concrete slab itself to deliver polyurethane foam, our method raises the concrete, fills voids, and stabilizes soils. A small hole is drilled into the slab, into which a tapered delivery port is inserted. The injection gun, connected to the port, pumps the polyurethane material through the port and slab, with the foam expanding within seconds, compacting loose soil and lifting the concrete.

This highly accurate and simple process is executed via incremental injections. The lifting foam fully expands within a brief period, allowing for monitored elevation and prevention of over-raising the concrete slab.

Applications of Concrete Leveling Foam

Void Filling: Polyurethane foam is not limited to addressing concrete settling. It can also fill voids under slabs resulting from excessive settling or washouts. It imposes 15-25 times less weight than traditional mudjacking or cementitious grout mix, easing the pressure on a failed subgrade.

Joint/Slab Stabilization: Slab stabilization is critical when slabs lack support and are susceptible to cracking under heavy loads. This specialized foam, designed for joint/slab stabilization, fills voids to provide support and eliminate movement. Its slow reaction time and minimal expansion strength allow for thorough coverage under the slab or along a joint.

Concrete Leveling Polyurethane Foam Injection vs. Mudjacking

Concrete leveling foam offers several advantages over mudjacking, a method developed approximately one hundred years ago. Mudjacking is typicall messier and requires substantial machinery to transport and pump the heavy slurry under the slab. Any spillage can result in a significant mess. Mudjacking slurry, a mixture of sand, cement, and other natural materials, weighs approximately 100 pounds per cubic foot, compared to concrete leveling foam’s weight of 2.5 to 4 pounds per cubic foot. Moreover, the much larger 2-inch holes required for mudjacking can crack the concrete slab and provide an avenue for roots to penetrate.

Unlike mudjacking slurry, concrete leveling polyurethane foam is hydrophobic, inert, and waterproof, ensuring its structural integrity remains uncompromised when in contact with water. Conversely, mudjacking slurry can wash away upon contact with water, leading to further slab sinking.

Finally, concrete leveling foam operates with rapid effectiveness and exhibits prolonged durability. Upon being injected beneath the slab, it solidifies within mere minutes. On the other hand, mudjacking demands an extended application duration and frequently yields a shorter effective lifespan, which, dependent upon environmental factors and particular conditions, may only persist between 2 to 5 years before the slab descends again. This stands in sharp contrast to the notably extended typical longevity offered by concrete leveling foam.

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SealBoss Slab Lifting Systems

Slab Lifting
Soil Compaction & Consolidation

Introduction:

Ensuring concrete structure stability often depends on addressing the underlying soil conditions. Techniques such as slab lifting, soil compaction, permeation, and consolidation injection systems provide the necessary support.

Using methods like polyurethane foam injection and permeation grouting, we can achieve efficient, non-invasive, and durable solutions for various soil and slab issues.

Slab Lifting, Soil Compaction, Permeation, and Consolidation Injection Systems

Effective void filling and slab lifting procedures can provide for stable subsoil to adequately support the structure above. If there are concerns about the subsoil’s stability, soil permeation grouting should be considered, provided the soil composition is suitable.

Slab Lifting and Void Filling

Slab lifting and void filling involve injecting structural polyurethane foam into voids beneath settling or uneven concrete slabs. This proven method stabilizes slabs without the need for excavation and adds minimal weight. Known as slab jacking, foam jacking, polyurethane concrete raising, poly jacking, or poly leveling, this technique offers several advantages over traditional mud jacking methods.

Advantages of Polyurethane Foam Injection

Non-Invasive: No need for excavation, preserving the surrounding landscape and structures
Lightweight: Adds minimal weight compared to other materials, reducing the risk of further sinking
Quick Setting: Polyurethane foam sets rapidly, allowing for quicker project completion
Durability: Provides long-lasting stability and support.

Permeation Grouting and Soil Stabilization

Permeation grouting and soil stabilization are performed by injecting a single-component, low-viscosity polyurethane hydro-active foam, catalyzed with an accelerator to specification, into the soil. This is done through injection packers, lances, or grout injection needles to consolidate and compact the substrate, increasing stability by binding soil particles together.

Procedure and Considerations

Soil Analysis: Before any permeation grouting procedure, the soil composition must be analyzed to predict the effectiveness of the treatment
Injection Process: The foam is injected into the soil to fill voids, stabilize loose soil, and enhance the load-bearing capacity of the ground
Equipment Used: Injection packers, lances, and grout injection needles are utilized to deliver the foam precisely where needed

Conclusion

Slab lifting, void filling, and permeation grouting are essential techniques for maintaining and restoring the stability of concrete structures. By using advanced polyurethane foam injections, these methods provide efficient, non-invasive, and durable solutions for various soil and slab issues. Proper soil analysis and the right application of these techniques ensure the long-term stability and safety of the structures.

Filling / Lifting / Permeation
Grouting

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Floor Joint Filler Pumps

SB JointMaster

Crafted from 30+ Years of Experience and Trusted Customer Insights

Are You in the Market for a New Floor Joint Repair Pump?

Floor joint repair pumps go by many names; Floor Joint Pump, Polyurea Joint Fill Pump, Floor Epoxy Pump, Polyurethane Floor Joint Filling Pump, etc.

Even though companies market these machines with similar vernacular, it is important to know these machines are not all the same. It is important to know exactly what material your pump is designed for in order to get the best results and not damage your machine.

Before you purchase a machine for your intended application, it always important to factor in the different attributes of your pump, before you make your final decision.

Key Factors to Consider Before Your Purchase

Function: Can it reliably pump the materials you need?

Always refer to data sheets and SDS.
Consult a technician for precise advice.

Design: Appearance matters.

A professional, sleek design boosts confidence.
Ensure there aren’t any nuts, bolts, or awkward seams protruding.

Quality: Daily use can take a toll.

Opt for machines with robust frames and superior workmanship.
High-pressure gear pumps are a must to prevent costly leaks.
Only settle for top-quality, CE-rated motors.

Versatility: Does it cater to your unique needs?

Look for options like extended battery operation, heater bands for cold environments, and additional purge valves.

Safety: Never compromise.

Ensure all moving parts are fully enclosed.
Avoid machines where the full voltage runs through the applicator wand.

Price: Seek value, not just cost.

A system’s longevity and ease of maintenance are paramount.

Introducing: The Sealboss JointMaster Pro 2

Consider the industry gold-standard, the JointMaster stands out as a third-generation professional machine.

Built on valuable customer feedback and real-world experience.
Boasts an innovative low-voltage control line, ensuring no high voltage at the applicator wand – a unique Pro2 standard.
Trusted and sold worldwide.
The SealBoss JointMaster Pro 2

Partner with SealBoss

Let us elevate your business with superior products and expertise. Maximize your investments with our high-quality range and exceptional know-how.

Questions? Need a Quote?
Connect with us at 714-662-4445. We’re here to help.

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Showroom Floor Detailing – Joint Filler

Off-Road Vehicle Dealership

Showroom Floor Detailing
Joint Filler Application

SealBoss Polyurea Joint Filling System

Showroom Floor Detailing: Insights into Joint Filler Application

In the realm of construction and interior detailing, achieving the desired finish is crucial. A recent project, the construction of an Off-Road Vehicle Dealership, offers insights into this process. This article explores the initial steps taken to prepare for a polished “Showroom Finish” for the dealership’s floor, with a focus on the SealBoss Polyurea Joint Filling System.

The Vision

As the construction of the new Off-Road Vehicle Dealership neared its completion, the owner had a clear vision in mind. They desired the joints in both the showroom and the maintenance shop to be filled with a joint fill that not only exuded quality but also promised durability and flexibility. The ultimate goal? A polished floor that mirrors the high standards of the vehicles on display.

The Product of Choice

Enter the SealBoss 6500 Polyurea QuickFix Joint Filler. Recognized for its superior quality, this product was chosen to be applied using the SealBoss JointMaster Pro2, a professional joint filling machine. This machine, known for its efficiency and precision, ensured that the joint filler was applied seamlessly.

The Process

The application process was streamlined and efficient, thanks to the SealBoss JointMaster Pro2. With this machine at their disposal, a three-man crew managed to fill approximately 1,400 lineal feet of joints, each with a depth of 1 ½ inches, in a mere two hours. The crew was strategically divided, with two members operating the pump and one dedicated to joint preparation and shaving.

The Art of Joint Preparation

Joint preparation is a meticulous task that demands attention to detail. It begins with chasing and vacuuming out the joints to ensure they are free from debris. Once cleaned, a unique technique is employed. Ivory soap is used to create a bond break between the floor surface and the SealBoss 6500 Polyurea Joint Filler. This not only facilitates an easy and clean shaving procedure but also eliminates any potential “shadowing” effect, which can sometimes be observed when installing joint fillers.

Conclusion

The construction of the Off-Road Vehicle Dealership showcases the importance of precision and quality in floor detailing. With the right products and techniques, achieving a “Showroom Finish” appearance is not just a possibility but a reality. The SealBoss Polyurea Joint Filling System stands as a testament to the advancements in the field of construction and interior detailing, promising a future where aesthetics and durability go hand in hand.

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Floor Detailing | Joint Fill

Joint Filling System Products Used

Cleaning Materials: Xylene, R70 Pump Flush, rags, bucket
Additional Tools: Class 27 Deep Cycle battery, Crack Chaser, Ivory Soap bars, 6” Scraper, Access 110v Power, Vacuum

Reach Out to Your SealBoss® Expert for Showroom Floor Joint Solutions

Should you have inquiries about concrete floor joint repairs, joint filling, floor crack remedies, or any associated applications, our dedicated team of SealBoss floor repair specialists is here to assist. Schedule an on-site consultation and comprehensive system training with us. Dial 714-662-4445 to connect.

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Epoxy versus Polyurethane Crack Injection

Epoxy vs Polyurethane Injection

Crack Injection Superheroes

Epoxy Resins versus Polyurethane Resins
A Concrete Crack Injection Comparison

Epoxy versus Polyurethane Crack Injection

Epoxy and Polyurethane Resin Based Crack Repair Systems are the Superheroes of Concrete Crack Repair

When you need to repair a crack in a concrete structure — such as a foundation or wall — from the inside (negative side) of the structure, there are typically two injection techniques and corresponding product technologies that you need to consider — epoxy resin injection and polyurethane chemical grout injection.

Epoxy Versus Polyurethane Injection – How to Differentiate the two Injection Methods and Techniques

Epoxy injection is typically performed on dry substrates versus polyurethane injection that works very well on wet and actively leaking substrates.

Fully cured high quality epoxy offers outstanding compressive and tensile strength properties, making epoxy injection the preferred method where structural crack repair is desired.

Polyurethane injection is performed to seal active leaks, prevent moisture migration and to protect structures from corrosion and water related decay. Polyurethanes are designed to interact and expand in contact with moisture, making polyurethane injection technology superior in wet and actively leaking environments.

There is an injection solution to most concrete crack related problems. But, there is no one-size-fits-all solution.

Let us compare some of the main characteristics of each type of crack injection, outlining their strengths and their recommended range of applications.

Injection Repair Conditions and Objectives

Does your crack impact the structure?
Do you need to restore structural strength to the structure?
Does the crack carry water?
Is the crack actively leaking?
Do you need to protect the structure from water ingress and water damages?

Comparison of the Characteristics of Epoxy and Polyurethane Polymers and Elastomers

Epoxies and polyurethane polymers are chemical resins with different reaction profiles and physical properties.

Epoxy is a strong adhesive or glue that does essentially not expand. While curing epoxy creates a strong bond with the concrete substrate and ultimately provides a repair of high compressive and tensile strength properties.

Epoxy is a two component system, one component is the epoxy resin and the second is the hardener. The components are blended in the static mixer of the injection pump applicator immediately before crack injection. Injection epoxies cure chemically within a specified time and harden further over days and weeks.

Polyurethane injection foam is primarily a water activated sealant or leak-seal grout with expanding properties during reaction. The cured product creates a compression seal of varying flexibility.

Polyurethane foam resin often utilizes an activator or accelerator. Resin and activator are mixed before they are injected. Polyurethane resins are also available in two component chemical cure variants. No moisture needed.

Polyurethanes are extremely versatile. Their chemical and physical properties vary to suit the needs of specific applications and jobsite conditions.

Polyurethane resins vary from rigid and strong to flexible, rubbery and soft elastomer compositions. The initial cure time for crack injection polyurethanes is generally 1 – 10 minutes and is influenced by accelerator usage, temperature and moisture availability.

Differences in The Epoxy and Polyurethane Crack Injection Processes

Epoxy crack injections are typically performed at lower injection pressures (20-200 psi) and with surface mounted ports.

Polyurethane crack injection is often performed at higher pressures to move the expanding foam through the cracks with special injection pumps and packers installed into drilled holes. The injected polyurethane is supposed to fill the crack through the entire thickness of the structure thereby preventing water from entering the crack.

Epoxy Crack Injection

Structural Repair – The tensile strength and compression strength of cured epoxy is typically much greater than the strength of concrete making epoxy a good choice for foundation wall structural crack repair. When tension is applied to a crack due to thermal cycling or other forces, the cured epoxy crack repair will not typically yield. Epoxy is typically rigid and not flexible.
Extended curing time allows the epoxy to penetrate the crack and fine fissures. SealBoss epoxies can be obtained in various viscosities to suit fine to wide cracks.
Dry Substrate Recommended – Epoxy typically has reduced adhesion to wet and saturated surfaces. A dry environment is desired for best results. Actively Leaking Cracks – Epoxy cannot be used for actively leaking cracks. Epoxy resin needs to be contained in a crack until cured sufficiently to achieve full strength.
Epoxy injection is performed through surface mounted ports. Moisture adversely affects the adhesive qualities of the anchoring epoxy used to glue the injection ports onto the crack. Without sufficient bond strength, the anchoring epoxy will not withstand the pressure of the injection.
SealBoss provides mechanical packers and special plastic packers to permit epoxy injection in adverse environments.

Polyurethane Crack Injection

Wet and Dry Applications – Polyurethane injection foams and resins can be used in adverse environments regardless of the condition of the crack and the weather. The crack can be fine or wide, actively leaking, full of mud and/or mineral deposits. (Whenever possible it is advised to flush and clean out a crack prior to injection)
Water Stop and Structure Preservation – The rapid curing of polyurethane is beneficial when stopping a gushing leak. The chemical expansion of the polyurethane foam (typically 2-40 times its original volume) makes polyurethane very effective at filling voids within the concrete. Polyurethane resins and foams play an important role in preserving concrete and rebar.
Not a Structural Repair – Polyurethanes do not provide structural repairs in concrete cracks.
High injection pressures are often required to move PU foam into fine cracks and fissures.
Mechanical packers require drill holes. No matter if the crack is actively leaking, under water or the concrete is deteriorated, mechanical packers are designed to work in adverse environments.

Product Characteristics

EPOXY (EP)

Rigid, very strong adhesive for structural repairs
Mainly for dry or damp environments, potentially reduced adhesion on wet substrates
Excellent to regain structural strength in torn structures: earthquake damage, extended stress damage, shrinkage cracks, corrosion
Not a water-stop material and does not tolerate extended movement – cracks can form next to repair
Two component formulation – Quick reaction time and cure
Viscosities from very low liquid to paste
Very resistant, long term solution
Available in bulk and cartridges
Recommended Products:
Resins: 4040, 4050
Paste/Putty: 4500 Epoxy Quick Seal
Cartridge System: 4000 Epoxy Cartridge System
SealBoss Surface Mounted Ports / Injection Packers

POLYURETHANE (PU)

Flexible to semi-flexible sealants with less structural strength compared to EP
Typically Hydro-Active – reacts with water forming foams (water-stop & leak-seal), gels and solid (non cellular) flexible or semi flexible sealants
Two Component PU Resins can be dry reactive. No water needed
Classified as hydrophobic (foams/resins) for crack injection, joints voids or hydrophilic (foams/gels) for curtain, bladder injection behind structures. Both groups are water activated for use in wet environments
Superior water-stop capabilities
Single or two component, accelerators common. Viscosities low to medium. Very resistant, long term solution
Recommended Products:
Foams: 1510, 1570, 1570 LV
Flexible resin: 1403, 1503 LV-Resin Line
Gel/Foam: Flexgel2
Cartridge System Available

Epoxy versus Polyurethane – Conclusion

In non structural water related repairs PU is generally the material of choice. This is true for most below grade repairs including basements, tunnels, parking garages and manholes. PU is a good void filler and is also used to stabilize dirt and lift structures.

EP is an excellent adhesive for structural repairs of stressed concrete substrates and deteriorated concrete structures.

TIP

When initiating concrete crack injection, it’s advisable to commence with an exploratory grouting or mock-up injection stage. This entails identifying a deep, distinctly defined, and potentially actively leaking crack for the initial injection. This preliminary step facilitates the estimation of required material quantity and necessary injection pressures.

The consumption of material should be closely monitored and measured, and the injection pressures should be accurately assessed.

This process helps us understand the conditions of the project and plan the remaining injection process effectively.

Accessories

EPOXY (EP)

Surface port injection at lower injection pressures 30 – 100 psi — Reason: Injection is typically done in dry environments and surface ports can be attached easily with epoxy adhesive.
Holes do not have to be drilled – there are exceptions
The crack surface between the ports has to be surface sealed to prevent leakage during injection
The viscosity of the epoxy resin stays low during the injection process, resulting in lower injection pressures
Recommended Products:
Surface ports, specialty ports

POLYURETHANE (PU)

Mechanical packer injection at higher pressures 50 – 3000 psi — Reason: PU injection is often performed in a wet environment where adhesives for surface ports cannot be used.
Mechanical packers are installed by drilling a hole into the structure which the packer fits snugly. The packer is tightened mechanically for high pressure injection
PU Foam immediately reacts with moisture in the crack increasing resistance of product flow, resulting in higher injection pressures
Recommended Products:
Complete line of packers: S-Type, R-Type, custom sizes, Hammer-in packers, specialty packers

Conclusion:

PU generally needs higher pressures and therefor the more sophisticated connectors / packers. There are many exceptions. For example curtain injection with PU gel into the space between structure and soil needs lower injection pressures but higher rates of material flow. The filling of larger voids and joint injection also uses lower pressures. PU injection through surface ports is not common, but high pressure epoxy injection through packers is seen more frequently. Reasons could be very thick concrete to be penetrated or damp / wet surface conditions.

Pumps

EPOXY (EP)

Two component equipment for most epoxy resins for ease of use and precise mixing
Epoxy is a very strong adhesive and may render equipment unusable if not cleaned thoroughly
EP is not very moisture sensitive and not moisture reactive. Epoxy does not expand during reaction – which results in lower injection pressures
Pneumatic or manual guns for cartridge systems / smaller jobs
Two component injection pumps achieve high injection pressures for large volume commercial injection projects. Pumps are pneumatic or electric
SealBoss Corp. supplies EP resins and paste also in cartridges
Recommended Products:
Hand held guns, electric pump P3003, pneumatic pump PA3000, 4000 Cartridge System

POLYURETHANE (PU)

Single component equipment for most water activated hydrophobic PU foams, accelerator to be added prior to pumping
Either single or two component equipment for true two component PU resins such as 1400 LV-Resin Line
Either single component or multi-ratio two component equipment for hydrophilic PU Gels based on the application and product.
Single component pumps include inexpensive hand held devices, hand pumps and electric pumps
Multi ratio devices can be manual, electric and pneumatic. SealBoss Corp. supplies PU in bulk and in containers as small as 1 gal units and in cartridges
Recommended Products:
Hand held guns, manual pumps, electric pumps, Signature Line Pumps

Choose Your Pump:

No matter if you are faced with a minor basement leak or a major tunnel gusher of large hydrostatic pressure , we have you covered. You need to have the right tools at hand to achieve the results. SealBoss infrastructure repair pumps provide you with tried and true concrete solutions.

Final Thoughts:

Over the years, injection technology has evolved, becoming both sophisticated and intricate. At SealBoss, we pride ourselves on offering a diverse range of products, pumps, and accessories tailored to meet the ever-growing needs of injection applications.

Our commitment extends beyond just providing products; we offer comprehensive technical support to ensure you find the perfect product-equipment synergy for your project’s success. We invite you to leverage our expertise and training resources. Remember, we are only a phone call away, eager to assist and guide you.

SealBoss ® EPOXY

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SealBoss ® POLYURETHANE

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Contact Your SealBoss ® Technician

How to Fix Foundation Cracks

"Concrete Cracks have Met Their Match..."
- Popular Mechanics -

How to Fix Foundation Cracks

Popular Mechanics – Pop Mech Pro, Publishes Article with Detailed Pictures about “How to Fix Foundation Cracks”, using the SealBoss Crack Repair Method with Specialized Leak-Sealant and Injection Packers:

Concrete cracks have been an issue since the beginning of concrete construction three millennia ago. The article explains that modern concrete lacks self-healing properties, which causes cracks to worsen over time and impacts both homeowners and engineers.

Popular Mechanics’ century-old building in Easton, Pennsylvania, suffered from cracked concrete until local contractor repaired it. They used a specialized leak-sealant from SealBoss and ordinary tools to fill and seal the cracks, preventing further water entry and degradation.

The article discusses the SealBoss 1510 Water Stop Foam solution for fixing concrete cracks, a common issue affecting many structures from homes to bridges.

The article highlights how modern concrete deteriorates over time due to water seepage through cracks.

“After the water-stopping material has hardened into a plastic foam, the contractors removed it from the wall and floor with putty knives and scrapers. They removed the packer with a socket and socket wrench, then filled the remaining hole with mortar. With that, the job is complete.”

— Popular Mechanics, Roy Berendsohn

The solution presented in this article and involves a straightforward repair method demonstrated by the contractor, using ordinary tools and SealBoss 1510 specialized leak-sealant from SealBoss. The process includes drilling holes along the crack, inserting injection ports, and injecting an expanding liquid polyurethane resin mixed with an accelerator to seal the crack effectively.

This method has proven successful in preventing further leaks through the foundation of the century-old building occupied by Popular Mechanics in Easton, Pennsylvania, showcasing its effectiveness in concrete crack repair.

“We were amazed at the simplicity of the process and the good results it produced–we haven’t seen any further leaks through the foundation since the two men completed their work.”
— Popular Mechanics, Roy Berendsohn

References

Link to the article — “How to Fix Foundation Cracks”
Popular Mechanics, Pop Mech Pro, 1/24/2024, by Roy Berendsohn

SealBoss Crack Repair Kits