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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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Rocking Concrete Slab Repair

Rocking Concrete Slab Repair & Stabilization
Concrete Leveling may be Your Best Alternative to Replacement

Fast and Minimally Invasive
No Excavation
Cost Effective
Stabilize Soils

Rocking Concrete Slab Repair:

Addressing Rocking Slab Issues Efficiently

Rocking concrete slabs, often observed in warehouses, not only present damage risks to forklifts and equipment but also endanger the safety of warehouse employees.

An Innovative Solution: SealBoss Polyurethane Foam Jacking

SealBoss polyurethane foam jacking and lifting solutions are ideal applications for stabilizing, void filling, and re-leveling of concrete slabs.

The essence of slab lifting and stabilization lies in addressing unstable concrete slabs that have sunk due to various factors, such as aging, improper installation, soil conditions, or erosion. The repair is performed with a dual-component structural polyurethane injection foam. This foam seamlessly fills the voids beneath the slab, expanding to form a sturdy and lasting support structure.

The Process Explained

Here’s how it works:

In this smaller job showcased here, SealBoss 1640 Structural Foam and the very lightweight and affordable SealBoss P3003 two component injection pump were used.

Small holes are drilled through the concrete slab. High-density PUR foam is then injected through these holes, commencing the foam’s expansion while simultaneously filling the voids beneath the concrete.

As the foam expands, it lifts the slab, aligning it perfectly with the neighboring slabs. An added benefit is that any water trapped underneath gets displaced, negating potential future water damage.

Choosing this method over concrete replacement not only saves on costs but also provides a swifter, cleaner, and less intrusive solution.

Best of all? Once the process is complete, the stabilized concrete slabs are prepared to handle traffic in just about 30 minutes.

The Top Benefits Of Polyurethane Concrete Slab Lifting and Void Filling

Quick Process and Cost Effective
Accurate Lift to Match Adjacent Slabs
Easy Access via Pump / Hose System
Filling voids and Stabilizing Soil
No Expensive Concrete Replacement
No Damage to Landscape
Moisture Proofing
Multi-Use – Lift and Stabilize Slabs, Foundations, Stairs, Driveways
Marine Use – Sea Walls, Docks, Bulkheads

If you have any questions on Rocking Concrete Slab Repair, or any of our product lines and applications, please contact our team of qualified SealBoss representatives.

Schedule an on site consultation & full injection systems training.

Call us at 714-662-4445.

SealBoss Void Filling, Stabilizing, Lifting

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lances

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Bulkhead Repair

Bulkhead Restoration | Erosion Control | Permeation Grouting

Introduction

Welcome to our exploration of Bulkhead Repair, where we’ll delve into the essential techniques for maintaining and restoring these critical shoreline structures. Bulkheads play a crucial role in coastal and waterfront protection, acting as barriers that prevent erosion and stabilize soil along beaches, lakes, and rivers. These structures not only protect adjacent properties but also help preserve the natural shoreline and infrastructure.

In this episode, we focus on the application of polyurethane foams—a versatile material widely used for bulkhead and seawall repairs. These foams offer several advantages: single-component foams are ideal for crack injections and permeation grouting, which anchor soils and slow erosion. Meanwhile, plural-component foams are excellent for filling voids, stabilizing concrete structures, and, under controlled conditions, even adjusting structural alignment. With their low viscosity, these foams penetrate deeply, bonding and reinforcing weak soils and damaged substrates to extend the life of bulkheads.

Whether you’re a contractor, engineer, or simply interested in learning more about infrastructure repair, this episode provides valuable insights into how modern techniques keep our coastal environments and waterfront properties protected against the forces of nature.

Unpacking Bulkhead Repair: A Deep Dive into the Use of Polyurethane Foams for Bulkhead Repair

Technical Podcast for the Infrastructure Repair Industry

Crafted specifically for marine and coastal environments, bulkheads are structures designed to strengthen soil conditions along the shores of beaches, lakes, and rivers. They not only maintain but also offer strategic protection to substrates from neighboring waters, ensuring the safety and longevity of adjacent structures. Beyond serving as mere protective barriers, bulkheads elevate the functionality of waterfront zones, ensuring a safe haven for both the buildings and the individuals who frequent the shoreline.

Join us for a captivating episode where we delve into the intricate world of bulkhead repair, focusing on the unique properties and application techniques of single and plural component polyurethane foams. Our guest, Jerald, a seasoned contractor with over three decades of experience, offers invaluable insights into the art and science of using these foams for long-lasting and efficient bulkhead restoration.

Episode Highlights:

Bulkhead Repair | Seawall Restoration | Permeation Grouting | Soil Erosion Control

The Dual Role of Polyurethane Foams

Jerald sheds light on the distinct and synergistic functions of single and plural component foams in bulkhead repair, emphasizing their specific application techniques.

Single-Component Foam: Ideal for water stop crack injections and substrate permeation grouting, single-component, accelerator adjusted, polyurethane foam sets the stage for comprehensive bulkhead leak sealing and soil stabilization. Master the technique of employing grout injection lances and needles to distribute the product effectively into the ground, anchoring sand and gravel — an essential measure for bulkhead stabilization and erosion prevention.
Plural Component / Two Component Structural Void Fill and Lift Foam: Renowned for its efficiency in filling voids and stabilizing concrete structures embedded in substrate with voids and gaps, this foam can penetrate, fill, and strengthen unsupported areas effectively. In the hands of a skilled contractor, the product can be used to adjust and correct the alignment of structural elements under specific conditions. However, due to its potent expansion capabilities, it’s crucial to exercise caution. The intense outward pressure it generates could inadvertently shift structures beyond the intended position.

About Slabjack Geotechnical

Established in 2011, Slabjack Geotechnical offers a comprehensive range of concrete services, including Slabjacking (concrete raising), pressure grouting, concrete crack, and joint sealing repair. They also specialize in leak seal applications in various structures. With operations in Spokane, Tri-cities, Wenatchee, and Puget Sound, they serve Commercial, Municipal, and Industrial sectors in Washington and Idaho.

With over 30 years of successful business ownership and a knack for problem-solving, Jerald is a cornerstone of the Seattle-area Slabjack company. His expertise in Slabjacking and geotechnical projects is sought after across the USA and Canada.

A big thank you to Jerald for gracing our technical podcast and sharing his vast knowledge with our listeners!

A Conversation Between Two Industry Professionals
Our guest today
Jerald Sargent, Slabjack Geotechnical, Washington
Your host: Chris Coderre, SealBoss Corp.

Seawall Repair Methods – A Comprehensive Guide

SealBoss ® Polyurethane Grouts

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Seawall

Concrete Solutions Network / Sealboss ® Podcast ©

Mockups | Curtain Wall Grouting | Negative Side Injection Waterproofing

Mockups
Curtain Wall Grouting | Negative Side Injection Waterproofing

Technical Podcast for the Infrastructure Repair Industry

The Importance of Mockups | Below Grade Injection Waterproofing

A Conversation Between Two Industry Professionals
Our guest today
Jake Holland, Vice President, Project Manager
Summit Sealants Inc. | Colorado / Washington
Your host: Chris Coderre, SealBoss Corp.

Predictive Mockups | Curtain Wall Grouting Techniques, Products and Injection Packers

“The Mockup is Worth its Weight in Gold”

In this episode Jake Holland explains how mockups help improve injection job performance and predict successful outcome. Jake provides some insight into specific injection techniques, product characteristics and preferred packer sizes for curtain wall grouting.

Jake Holland studied at Colorado State University in the Project Management Program. He has close to two decades of experience in commercial construction, waterproofing, structural restoration, and historical restoration. He comes from a long line of experience in the sealant trade and has proven himself to be a top project manager handling some of the most high profile restoration projects in Colorado. Summit Sealants has been specializing in waterproofing and water mitigation on commercial structures and operates from 4 locations in Colorado and Washington.

Thank you Jake for being a guest on our technical podcast!

The Indispensable Role of Mockups in Injection Waterproofing

Introduction

Injection waterproofing has become a crucial technique in the construction and maintenance of various structures, from residential homes to commercial buildings, and even infrastructure projects such as tunnels and bridges. This method is employed to improve the water-resistance of structures and protect them from the detrimental effects of water seepage. A pivotal step in ensuring the effectiveness of this waterproofing technique is the creation and utilization of mockups. This article aims to delve into the importance of mockups in injection waterproofing.

Understanding Injection Waterproofing and Mockups

Before discussing the importance of mockups, it’s essential to understand what injection waterproofing entails. This technique employs the strategic injection of waterproofing materials such as polyurethane or epoxy resins into various aspects of a structure. These materials are inserted into pores, cracks, and joints within the structure, and even into the space surrounding the structure, extending to the dirt substrate. This comprehensive approach serves to effectively block the ingress of water, creating a formidable barrier against potential water seepage. It’s a crucial process that can enhance the longevity of the structure and safeguard it against dampness, water damage, and structural integrity problems.

In this context, a mockup can be understood as either a functional replica of the structure or, more commonly, a carefully selected segment of the existing structure.

This designated part is chosen for its representative nature, closely mirroring the conditions and real-world challenges anticipated during the comprehensive execution of the waterproofing injection project. Thus, it offers a realistic simulation of the full-scale scenario, providing valuable insights for the upcoming task.

The Importance of Mockups in Injection Waterproofing

Testing the Feasibility of the Waterproofing Solution:
The first and foremost reason to create a mockup is to validate the feasibility of the chosen waterproofing solution. A mockup can test whether the proposed waterproofing material will adhere correctly to the structure’s material, effectively seal its cracks, or withstand its environmental conditions. This step is critical to avoid costly mistakes and ensure the waterproofing solution’s efficacy.
Improving Accuracy and Predictability:
A mockup can help determine the exact amount of waterproofing material required and the optimal injection points and pressures. This can reduce waste and improve efficiency in the actual construction phase. Moreover, the mockup stage can reveal potential issues that may arise during the application, enabling teams to address them proactively.
Enhancing Training and Communication:
Mockups are instrumental in training the application team. They provide a hands-on experience, enabling team members to familiarize themselves with the application process, understand the structure’s complexities, and gain confidence before proceeding to the actual project. Furthermore, they facilitate clear communication among the project’s stakeholders, ensuring everyone understands the proposed solution and its implementation. architectural projects.

Conclusion

The use of mockups in injection waterproofing offers a range of significant advantages, from improving project accuracy and predictability to enhancing team training and communication. By representing a vital stage in the waterproofing process, mockups can significantly increase the chances of project success, making them an indispensable tool in contemporary construction practice. Therefore, it’s safe to conclude that any injection waterproofing project can immensely benefit from investing time and resources into creating and using a detailed, accurate mockup.

SealBoss ® Grout Injection

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Concrete Solutions Network / Sealboss ® Podcast ©

How to Lift Concrete Slabs with Polyurethane Foam | Concrete Raising / Foam Jacking

How to Lift Concrete Slabs
with Polyurethane Foam
Concrete Raising / Foam Jacking

Poly Jacking and Foam Jacking – Lifting Concrete Slabs with Plural Component Foam by SealBoss

Introduction

The innovative technique of Poly Jacking, also known as Foam Jacking, is rapidly gaining recognition.

This method, utilizing plural component structural polyurethane foams, offers a clean and quick solution for stabilizing and lifting sunken concrete slabs. This overview explains some nuances of this process, exploring its phases, methodologies, and the expertise SealBoss brings to the table.

What is Poly Jacking / Foam Jacking?

Poly Jacking, or Foam Jacking, is a specialized process designed to repair sunken and unstable concrete slabs. The technique involves injecting SealBoss 1640 Structural Strength Slab Lifting, Polyjacking, and Void Filling Foam beneath the concrete. This is achieved by drilling small holes and pumping the expansive foam under the slab, providing support and elevation.

The Inspection Phase

Evaluating the Site

Before commencing the Poly Jacking process, a thorough inspection of the slab lifting area is essential. This includes:

Soil Condition Assessment:
Understanding soil conditions is vital, as discussed in our article, What Is Dynamic Cone Penetration Testing | SealBoss Deep-Soil-Lift“
Structural Damage Analysis:
Identifying any structural damages to the concrete and the extent of support loss due to voids or cavities beneath is crucial
Measurement of Sunken Slabs:
Structural damages to the concrete slab and loss in support (voids/cavities) under the structure need to be determined. The actual loss in height of the sunken slabs of concrete have to be measured.

These factors collectively aid in predicting the success of the repair and determining the necessary materials and time.

The Repair Phase

Strategy and Execution

Prior to lifting a sunken piece of concrete slab the method of approach has to be determined to achieve the desired result.

The points of initial and subsequent injection and sequence of injection is crucial to lift a slab evenly and with the least stress to the concrete as possible, as concrete sections may crack. Even distribution of pressure during the process is key to lift a slab successfully.

When SealBoss polyjacking grout is first injected through drill hole in the slab it will initially fill any voids and cavities under the structure.

Once the voids are filled and the foam grout has gained strength, it will start to build pressure and compact the soil under the slab to the point where the soil is dense enough to support the foam pressure necessary for the slab to lift. Soil of lower density will compact more under pressure and may require more foam grout during the process.

As the pressure builds and the lifting process begins, the vertical movement of the slab has to be monitored closely. The points of injection may need to be alternated to keep forces and stresses to the slab as low as possible and to prevent cracks in the concrete. Even and steady lifting is the key to success.

During the lifting process the soil will continue to compact until reaching sufficient density to raise the slab to the desired elevation and level with the surrounding substrate.

Execution Steps Overview

Determining the Approach:
Before lifting the sunken slab, an appropriate method must be planned to ensure the desired outcome
Injection Point and Sequence:
The choice of initial and subsequent injection points and their sequence is critical to evenly lift the slab and minimize stress and potential cracking
Void Filling and Strength Building:
Initially, SealBoss polyjacking grout fills voids and cavities, gaining strength to build pressure for lifting
Soil Compaction and Slab Elevation:
The foam grout compacts the underlying soil, enhancing its density to support the lifting process
Monitoring and Adjusting:
Continuous monitoring and adjusting injection points are essential to ensure even lifting and prevent concrete cracking
Achieving Desired Elevation:
The process continues until the slab is raised to the desired level, aligning with the surrounding surface

SealBoss Expertise and Support

SealBoss is not just a provider of high-quality poly jacking and slab lifting products; we are your partners in concrete repair. Our team of experts is always ready to assist with product information, equipment recommendations, and tailored solutions to meet your unique needs.

Conclusion

Poly Jacking / Foam Jacking with SealBoss 1640 Structural Strength Slab Lifting, Polyjacking, Void Filling Foam offers a groundbreaking approach to concrete repair. This technique not only ensures structural stability but also extends the lifespan of concrete slabs. Whether you are a professional contractor or a homeowner, understanding this process is the first step towards effective and lasting concrete repair solutions.

For more information and personalized assistance, contact SealBoss today. Our dedicated representatives are here to guide you through every step of your concrete repair journey.

SealBoss Void Fill & Lift Injection

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Polyjacking

How To Podcast | Leak Sealing Polyurethane Crack Injection | Concrete / Shotcrete

Technical Podcast for the Infrastructure Repair Industry

How To Podcast | Leak Sealing Polyurethane Crack Injection | Concrete / Shotcrete

Polyurethane Crack Injection from Start to Finish

“…They don’t know Chemical Grout…”

A Conversation Between Two Industry Professionals | Episode 5

Our guest:
John Elder
President
Surfside Restoration & Waterproofing, Inc.

Your host:
Chris Coderre
SealBoss Corp.

How To Podcast:
Leak Sealing Polyurethane Crack Injection in Concrete and Shotcrete Structures

“… They don’t know Chemical Grout…”

A conversation with John Elder, a passionate concrete restoration professional with 30 years of polymer crack injection and concrete restoration experience….

In this episode, John shares his experience with chemical grout leak sealing injection from start to finish.

John provides insight into specific injection techniques, product characteristics and shares with you his personal preference for packers. He has some tips on how to deal with rebar when drilling packer holes and how to set packers strategically in adverse circumstances.

Learn about polyurethane foam resin viscosity and how it may affect your injection success.

Epoxy vs Polyurethane Chemical Grout

“… They don’t know Chemical Grout…”

Not all specifying engineers are familiar with the multitude of chemical grout products and injection techniques and how to use them correctly. As a contractor you should always voice your concerns. Occasionally the engineers need to be educated to specify the correct product for the job on hand.

John touches on the specific differences between epoxy injection and polyurethane chemical grout injection and when to use which product.

Thank you John for being a guest on our show!

About

Surfside Restoration & Waterproofing, Inc.

“Our past projects include both new construction and repairs/restorations. Occupied and fully operational job sites are never a problem. We offer an end-to-end client experience that includes seamless communication, budgeting, staffing, on-site organization, with quality workmanship every time.”

“As the owner of Surfside Restoration, I take pride in the fact that I am out there working with my crew on a daily basis. Not only does this help the morale of our crew, it is an added benefit to the contractors who hire us. They will get the answers they need instantly. No waiting for a return call with a guess of what issues may need to be resolved.” – John Elder

SealBoss ® Grout Injection

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Injection

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Residential Polyurethane Foam Void Fill & Slab Stabilization

Residential Polyurethane Foam Void Fill
& Slab Stabilization

Structure prior to injection

Is Polyurethane Foam Void Fill Quick and Affordable?

Time-Sensitive, Cost Effective, Minimal Invasive

Erosion caused by the movement of water can lead to many structural issues on a residential property. Water can wash away improper fill and undermine the substrate below a slab. This can cause cracking on the slab or on a masonry exterior and lead to structural and cosmetic issues.

The back patio and three season room addition had begun to sink due to improper dirt work and erosion. The goal of the repair was to fill the voids under the structure with a high strength polyurethane void fill foam to reduce or eliminate further water ingress and to provide structural support for the sinking slab and structure.

The project required a quick, time-sensitive , minimal invasive and comparatively low cost solution.

After the injection cured foam was observed as it had emerged from fissures in the surrounding soil during the injection process. Although not a primary objective in this comparatively low cost repair, a slight lift of the structure was achieved.

Structure after injection - Voids are filled and lift of structure observed

System Used

SealBoss 1640 polyurethane void fill and polyjacking foam was pumped through the SLP-2C pneumatic dual component pump, and injected through 5/8 button head Packers for maximum material flow.

Powered by a 4 CFM air compressor, the SLP-2C was able to successfully deliver the 1640 foam below the slab and successfully fill the void and stabilize the slab.

SealBoss’s 1640 is a 4 pound density Cold Foam specially formulated for maximum expansion at ambient temperatures eliminating the need to heat the material or injection lines in many environments. For minimum temperature requirements please consult your SealBoss technician.

The expanding and compressive strength qualities of SealBoss ® 1640 Structural Strength Foam make it a price competitive alternative for the filling of large voids and ‘pockets’. SealBoss ® 1640 Structural Strength Foam can be applied in dry and wet areas. Additional moisture may increase the expansion. The standard mixture expands approximately six times in volume. Job site testing is recommended to determine product suitability.

For best results with Cold Foam Lift & Under Slab Void Fill
Depending on ambient and substrate conditions foam may need to be temperature conditioned prior to use. Please consult with your SealBoss technician for details.

'As we injected under the slab of the corner of the three season room, the decorative masonry column began to creak and pop as the void under the slab was filled with 1640 polyjacking foam.

In addition to the void fill and erosion control application the expansion of the foam achieved a lift of the structure which helped to straighten the bent window frame. Water that was trapped in the windowsill began to run out. We could see the cracks in the masonry visibly shrink as the corner began to lift.

With such a compact and efficient void fill and slab lifting system, we can provide new business opportunities for smaller residential general contractors who want to expand their scope for sidewalk, driveway, patio, pool deck repair.'

Technical Sales Team

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What Is Dynamic Cone Penetration Testing | SealBoss Deep-Soil-Lift

Dynamic Cone Penetrometer Soil Strength Test | DCP

What is Dynamic Cone Penetration ?

Dynamic Cone Penetration testing is a procedure utilizing a Dynamic Cone Penetrometer (DCP) to determine the geotechnical engineering properties of soils by measuring in-situ soil strength and recording the thickness and vertical location of subsurface soil layers of higher or lower density.

What is the difference between Dynamic Cone Penetrometer (DCP) testing and Cone Penetrometer Testing (CPT) ?

Dynamic Cone Penetration Testing is similar to the more elaborate CPT. In both procedures a metal cone is vertically driven into the ground to continuously measure soil behavior. Unlike in CPT, where the cone is driven into the ground at a constant rate by varying amounts of force, in Dynamic Cone Penetration testing the cone is driven by a standardized amount of force from a mechanical hammer.

Dynamic Cone Penetration testing | Portable & Affordable

Dynamic Cone Penetration testing is performed with an efficient, very effective, less expensive and much smaller system than CPT. Basic DCP equipment is portable and permits soil testing to depths of several feet – this makes it a good choice for soil testing prior to slab lifting and polyjacking applications.

Dynamic Cone Penetration testing (DCP) | Equipment

The DPM 30 penetrometer, an affordable and portable system, is equipped with a 30 kg (66 pound) hammer with a 200 mm (7.87 inch) stroke and operated by a hydraulic motor. It is driven by either an electric or gas powered motor-pump unit. A hydraulic extractor is used to extract rods, lining tubes and samplers. The penetrometer is pedal-operated.

To measure soil density, the operator simply counts the number of blows it takes to drive the steel cone in ten centimeter increments. Typically, soil strength of sufficient density requires 1 hammer blow per centimeter or 10+ blows of the hammer to drive the cone 10 centimeters deeper.

In order to determine soil strength prior to a polymer lifting job, multiple tests should be performed, spread out evenly over the area up to a predetermined depth or to refusal when hammer blows no longer cause measurable movement. The test results will determine where potential weak soil conditions may be present and soil stabilization procedures can be performed to address weaker layers accordingly.

Please don’t hesitate to contact us here at Sealboss for more information about our extensive injection products, as well as recommended soil testing equipment. Your representative will be happy to assist.

Contact Your SealBoss ® Technician

SealBoss Slab Lifting Pumps and Starter Kits

The SealBoss ® GT 2C-5G Cart System (pic left) is an affordable, portable for new and experienced contractors. The entire system can easily fit in the back of a pickup truck. The set up is simple and requires minimal equipment. Available with Generator/ Air Compressor Combo.

SealBoss ® IP GT 2C Pro Cart System Two Component Pump / Slab Lifting Pump Page

The SealBoss ® P3003 Portable System (pic right) is a low cost, extremely portable small job system for low volume injection for slab support with minimal or no lifting requirements.