Alchatek Blog

Administrators at Orange County, Florida Public Works had a pressing issue. Settlement was occurring along a quarter-mile stretch of a three-lane roadway. The culprit? Loose, sandy soils combined with a high water table. Before repaving could begin, stabilizing the supporting soil was crucial. This case study explores how the problem was addressed and resolved. This project showcases innovative solutions for common infrastructure challenges in areas with problematic soil conditions.

Powerful Polymers

AP Fill 700 was selected as the repair material for this project. Its low viscosity allowed for effective soil permeation, and its curing strength promised to create a permanent soil mass. These properties made AP Fill 700 the perfect choice for stabilizing the loose soil beneath the roadway. The selection of this material demonstrated the importance of choosing the right product for specific geotechnical challenges. AP Fill 700's unique characteristics ensured a robust and long-lasting solution.

Painless Procedures

A methodical approach was essential for this project. First, a large grid pattern for injections was carefully planned out. Each injection point was spaced five feet apart, and the depth of each injection reached approximately 15 feet. At each point, one gallon of material was injected per vertical foot. This systematic process ensured thorough coverage and stabilization of the problematic soil. The precise spacing and depth of injections were critical factors in the project's success. By following this detailed procedure, the team could address the soil instability comprehensively.

Rapid Results

This massive project was completed in about a week. As a result, the once-loose soil was successfully stabilized. The municipality now had a solid foundation to repave the quarter-mile stretch of road. In the end, Orange County Public Works had effectively addressed the settlement issue. The roadway was now ready for safe, long-lasting resurfacing. This efficient resolution solved the immediate problem and prevented potential future issues. The success of this project demonstrated the effectiveness of proactive infrastructure maintenance and the value of employing advanced soil stabilization techniques.

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A critical safety issue arose at a large paper manufacturing plant. Large voids up to 18 inches deep were discovered beneath concrete slabs supporting heavy water pumps. This hazardous condition put both employees and equipment at risk. SiteMix Pressure Grouting, LLC was called in to fill the voids and secure the slabs. 

Powerful Polymers

The technicians chose AP Lift 475 for the job. This material offers strong load-bearing capacity and cures quickly, minimizing plant downtime. Fast-curing was essential for a swift return to full operation, making AP Lift 475 the ideal solution for this repair task.

Painless Procedures

The repair began with the drilling of 3/4-inch holes. Workers drilled these holes roughly every 3 feet across the affected area. Then, they injected the repair material into each hole until the substance flowed beneath the slab from one drilled hole to the next. This method provided comprehensive coverage of the voids beneath the slabs, ensuring no areas remained untreated.

Rapid Results

The entire repair took only one day to complete. After the work, the slabs were securely stabilized, and the pump equipment and workers were safe. The paper manufacturing company expressed satisfaction with the outcome. Due to the quick turnaround time, minimal disruption occurred. Most importantly, eliminating the dangerous voids created a safer work environment.

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Many property owners face the frustrating issue of sinking concrete slabs. This problem not only affects the appearance of the property but also poses safety risks. Fortunately, modern solutions can effectively address sinking concrete without the need for complete replacement. Let's explore the causes of this common problem and discuss innovative repair methods.

Why Does Concrete Sink?

Several factors contribute to concrete settlement. First, erosion can wash away soil beneath the slab. Second, poor soil compaction during initial construction may lead to instability. Finally, biological decay of buried organic matter can create voids. As a result, the ground beneath the concrete becomes unstable, causing the slab to sink.

The Dangers of Ignoring Sinking Concrete

Failing to address sinking concrete can lead to serious consequences. For instance, uneven surfaces may cause trip hazards, potentially resulting in injuries and liability issues. Moreover, sunken slabs can damage vehicles and expensive structures. In extreme cases, a neglected settlement might even lead to sinkhole formation.

Traditional vs. Modern Repair Methods

Replacing the Slab

Historically, replacing the entire slab was a common solution. However, this approach is messy, time-consuming, and expensive. Additionally, it often involves significant disruption to the surrounding area.

Mudjacking

Another traditional method is mudjacking, which involves pumping a cement-based slurry under the slab. While effective in the short term, the injected material may crack or erode over time, leading to future issues. Furthermore, this technique requires large drill holes and disruptive heavy equipment.

Polyurethane Foam for Lifting Sinking Concrete

In recent years, polyurethane foam lifting has emerged as the preferred method for repairing sinking concrete. This innovative technique offers numerous advantages over traditional approaches.

Strength and Durability

Polyurethane foam features impressive strength, often surpassing that of bedrock. Once injected, the foam continues to gain strength, providing long-lasting support for the repaired slab. As a result, this solution offers exceptional durability compared to other methods.

Minimally Invasive Process

Unlike mudjacking or replacement, foam lifting requires only small drill holes. Consequently, this method causes minimal damage to the existing slab and surrounding area. The lightweight equipment used also reduces the risk of disruption and further soil compaction.

Rapid Results

One of the most significant advantages of polyurethane foam lifting is its speed. The foam cures to 90% strength in just 15 minutes. Therefore, repaired areas can often be used the same day, minimizing disruption to daily activities.

Environmentally Friendly

Alchatek offers polyurethane lifting foams that are NSF-certified to meet strict environmental standards. These products won't leach harmful chemicals into the soil or groundwater. As a result, property owners can feel confident in choosing contractors who offer this eco-friendly solution.

The Foam Lifting Process

The concrete lifting process using polyurethane foam is straightforward and efficient. First, technicians drill small holes in the slab. Next, they inject the foam through these holes. As the foam expands, it fills voids and gently lifts the slab. Finally, the holes are patched, and any cracks are sealed.

Choosing a Professional for Sinking Concrete Repair

When dealing with sinking concrete, it's crucial to hire experienced professionals. Skilled technicians can assess the situation accurately and determine the best course of action. Moreover, they have access to high-quality materials and specialized equipment necessary for effective repairs.

Restoring Your Property's Safety and Value

Addressing sinking concrete promptly can prevent further damage and costly repairs. Property owners can quickly and efficiently restore their concrete surfaces by choosing modern foam lifting techniques. This not only enhances safety but also improves the overall value and appearance of the property.

Fill out this form or call 404-618-0438 for a contractor referral today!

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A cooling tower lift station under construction in Iuka, Mississippi, had a significant water leak problem. The facility was losing approximately 1,000 gallons of water daily. The source and destination of the leak were unknown. A solution was implemented using concrete sealing techniques. Leak seal experts at Mid-South Concrete Lifting were called in to perform the repairs.

Powerful Polymers

The technicians chose Spetec PUR F400 for the repair. This polyurethane-based material has a closed-cell structure that seals cracks and joints. It remains flexible after curing, which allows for structural shifts. The material is NSF-certified, meeting environmental standards for water-related applications.

Painless Procedures

Due to the leak's unknown location, a comprehensive approach was necessary. The team injected the solution into all of the control joints and treated any visible hairline cracks within the concrete. The entire process was completed in two days, minimizing operational disruption.

Rapid Results

The treatment showed noticeable effects in the control joints. After the procedure, the company refilled the pit. The results met their expectations. Construction at the facility resumed without further delays. The solution effectively addressed the water loss issue while maintaining the structural integrity of the cooling tower lift station.

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In Salt Lake City, Utah, a historic brick structure built in 1893 showed signs of foundation settlement. The building's sandstone foundation presented a challenge. Traditional stabilization methods like installing helical piers could potentially cause further damage. Rhino Foundation Systems proposed a solution using polyurethane foam to stabilize the foundation. This case study examines how this approach addressed the building's foundation problems.

Powerful Polymers

The technicians selected AP Lift 430 polyurethane foam for the project. This foam was chosen for its ideal soil stabilization and structural support properties. The plan involved injecting the foam beneath the footings to provide a stable support platform. This method would achieve the desired stabilization without requiring extensive excavation.

Painless Procedures

The project began with a detailed site assessment to understand the extent of the settlement and soil conditions. Following this, the team designed a plan to install 63 deep foam injections under the foundation, ensuring comprehensive coverage and stabilization. Specialized equipment was then used to perform these deep injections, with the foam strategically placed to improve the soil and stabilize the foundation.

Rapid Results

The project delivered several key benefits. Deep foam injections improved the soil and provided a strong platform for the foundation, ensuring effective stabilization. The non-invasive process precluded the need for extensive excavation, preserving the structure and minimizing disruption. Notably, the project was completed in just two days, significantly reducing downtime and disturbance to the area. Finally, the polyurethane foam injections offered a cost-effective solution compared to traditional stabilization methods, making it an economically viable option for similar foundation challenges.

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The management team at a community pool in Midvale, Utah, faced a significant challenge. A water leak had saturated the silty soil beneath the structure, causing uneven settlement and safety hazards. To address this issue, they brought in geotechnical specialists from Rhino Foundation Systems, who proposed an innovative solution as an alternative to tearing out and replacing the pool. This approach not only promised to stabilize the pool but also lift it back to its proper position.

Powerful Polymers

The key to this solution was Alchatek's AP Lift 440 polyurethane foam. This powerful polymer was chosen for its soil stabilization, load-bearing, and lifting capabilities. Deep soil injections were planned to address the underlying issues. The foam's expanding properties would displace water and stabilize the soil base. This method offered a non-invasive alternative to traditional approaches like helical piles.

Painless Procedures

The process began with a thorough site assessment. The technicians analyzed soil saturation and settlement patterns. Based on this data, a 3-foot by 5-foot injection grid was designed. Next, holes were drilled through the bottom of the pool, and injection rods were installed. AP Lift 440 was injected beneath the structure. As a result, the expanding foam displaced water and stabilized the soil base. Following this, the pool was lifted by 3.5 inches. Finally, the pool deck was adjusted to match the new level.

Rapid Results

The pool was successfully stabilized and leveled with minimal disruption. Moreover, there was no need for extensive excavation. This method proved to be both effective and efficient. The foam injections effectively displaced water and stabilized the soil. Additionally, the lifting process was precise, raising the pool by exactly 3.5 inches. Perhaps most importantly, this solution was cost-effective. It proved quicker and more economical than complete pool replacement.

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A power outage at a high-rise condo building recently demonstrated the importance of proper underground power line installation. Soil settlement caused the power lines in the duct banks to shear off, cutting electricity to the entire building. Ironically, concrete poured over the lines to "protect" them had contributed to the settlement. With power cut off from the entire building, ownership was paying thousands per hour for emergency generators. A quick, durable repair was essential. Geotechnical experts from SiteMix Pressure Grouting, LLC tackled the problem using innovative techniques and materials.

Powerful Polymers

AP Lift 475, a high-strength polymer, was crucial for this stabilization project. Its placement near the condo's footing made this material the perfect choice. AP Lift 475 provides exceptional load-bearing capacity, which is ideal for supporting large structures. The polymer's robust properties ensure long-term support for the repaired power lines. Moreover, its strength offers a reliable foundation for the electrical system, preventing future settlement issues.

Painless Procedures

The repair process began with careful excavation. In order to access the crushed duct banks 12 feet below grade, the workers removed soil and concrete next to the building. Next, the geotech team installed 15-foot injection rods into the soil below the duct banks for deep soil stabilization, a technique also known as Deep Lock®. The team methodically created a grid pattern with 12 injection points, each spaced about 3 feet apart. This systematic approach ensures thorough soil treatment throughout the affected area. The specialists achieved comprehensive stabilization by injecting the polymer at multiple points, addressing all potential weak spots in the soil structure.

Rapid Results

The entire project was completed in less than two days. Once the soil was stabilized, electricians safely reinstalled power lines through new duct banks into the building. The duct banks were then covered with well-compacted backfill. The condo ownership could finally stop the costly generator payments. Most importantly, the repair provided a permanent solution to prevent future power line issues. This quick, effective intervention minimized disruption for residents while ensuring long-term stability for the building's power supply.

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Ground Penetrating Radar (GPR) has revolutionized soil stabilization and concrete leveling projects. This non-invasive technology provides crucial subsurface information without disturbing the ground. Consequently, contractors and engineers can make more informed decisions about soil stabilization and concrete leveling techniques. Furthermore, Ground Penetrating Radar for soil stabilization and concrete leveling is vastly improving project outcomes. Let's explore how this technology is making a difference.

Alchatek's Deep Look GPR System

The Deep Look GPR System employs advanced technology for superior results. Notably, it features multi-frequency antennas, covering a wider bandwidth than conventional systems requiring multiple antennas. As a result, this approach allows for both detailed near-surface imaging and deeper sub-surface imaging. Thus, the Deep Look GPR unit streamlines the data collection process.

Advantages of Ground Penetrating Radar

GPR offers several benefits for soil stabilization projects:

• Non-invasive assessment: First and foremost, GPR provides valuable data without disturbing the site.
• Comprehensive imaging: Additionally, it detects soil layers, voids, buried objects, and groundwater levels.
• Enhanced safety: Moreover, by identifying subsurface hazards, GPR improves worker safety. Consequently, these advantages enable more accurate soil assessment, leading to better application strategies.

GPR in Action: From Raw Data to Insights

Raw GPR data provides valuable insights into subsurface conditions. Specifically, high-resolution images reveal intricate details about soil composition and structure. For instance, GPR can detect individual shallow rebars and even the spacing between surface tiles. Undoubtedly, this level of detail is crucial for soil stabilization and concrete leveling projects, as it helps identify potential weak points or areas requiring special attention.

Ground Penetrating Radar for Soil Stabilization and Concrete Leveling

In conclusion, Ground Penetrating Radar has proven to be an invaluable tool for soil stabilization and concrete leveling projects. Its noninvasive nature allows for comprehensive site assessment without disturbance, while high-resolution imaging provides crucial insights into subsurface conditions. Furthermore, GPR enhances safety by identifying hidden hazards, reduces costs by minimizing exploratory drilling, and improves project outcomes through more informed decision-making. Overall, from initial site surveys to quality control and ongoing monitoring, GPR's versatility and accuracy make it a powerful tool for modern geotechnical work.

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The owner of an apartment complex overlooking Stephen Foster Creek in Gainesville, Florida, faced a critical issue. The embankment below showed signs of erosion, creeping dangerously close to the structures. With each passing day, the unstable ground crept ever closer to the foundations of the residential structures, posing a significant threat to both the buildings and the safety of their inhabitants. The situation demanded immediate attention and a robust, long-term solution to safeguard the property and ensure the well-being of its residents. The predominantly sandy composition of the local soil posed a challenge for stabilization. Consequently, the geotech firm Stable Soils was called in to address this pressing concern.

Powerful Polymers

After conducting a thorough site assessment and carefully evaluating various potential solutions, the team at Stable Soils identified AP Soil 600 as the optimal polymer for this challenging project. This choice was strategic. AP Soil 600 features low viscosity, a crucial characteristic that allows it to effectively penetrate and permeate sandy soil. Moreover, its impressive strength after curing promised long-lasting stability for the embankment.

Painless Procedures

Injection points were established in a zigzag pattern, spaced 18 inches apart. The team drilled 10 feet below grade to reach the optimal depth for soil reinforcement. Low-pressure injection was key to the operation’s success. This approach prevented the chemical from fracturing the soil or moving in unintended directions. The injection rod was slowly extracted, allowing for precise distribution of the polymer. One gallon was applied every five minutes and every vertical foot. In total, a 240-foot row of soil stabilization resin was installed.

Rapid Results

The impact of this intervention was immediately apparent. During a subsequent heavy rain event, surrounding areas suffered minor washouts while the stabilized soil remained completely unaffected. The stark contrast in performance served as a powerful testament to the effectiveness of the AP Soil 600 polymer and the precision of its application. The apartment buildings, once precariously positioned near the eroding embankment, now stand secure and protected, their foundations no longer at risk from the relentless forces of erosion.

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Clearwater, Florida public works administrators faced a critical stormwater infrastructure issue. A junction box was leaking through multiple pipe penetrations, compromising system integrity. City officials invited infrastructure repair specialists Helicon to address the situation. This project showcases an innovative solution to a common urban infrastructure challenge, enhancing stormwater management capabilities for municipalities.

Powerful Polymers

Helicon chose AP Fill 700 as the primary repair material. This polymer offers several advantages for stormwater system repairs. Firstly, it's ideal for point grouting, allowing for precise application. Additionally, the polymer features a quick reaction time, enabling rapid repairs. Perhaps most importantly, AP Fill 700 excels at filling voids. These voids, created around the junction box due to ongoing leaks, needed to be addressed to ensure a comprehensive repair.

Painless Procedures

Injection rods were utilized to deliver the polymer solution. These rods were pushed down from the surface to the depth of the leak, ensuring targeted application. As the injections progressed, they served multiple purposes. The polymer filled existing voids, stabilized the surrounding roadbed, and effectively cut off the leaks. To ensure complete coverage, the injection rods were raised in stages. At each stage, additional injections were performed. This methodical approach guaranteed thorough treatment of the affected area.

Rapid Results

The repair operation proved remarkably efficient. In just two hours, the entire job was completed. More impressively, the leaks were sealed immediately upon application of the polymer. This rapid resolution minimized disruption to the city's infrastructure and daily operations. As a result of this swift and effective repair, city administrators expressed high satisfaction with the outcome. 

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