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Problem
The residential recreation building in Houston, Texas, faced severe soil stabilization issues affecting the driveways and sidewalks. Significant sinkage had occurred over time, making these areas unstable and unsafe. This compromised the functionality and safety of the driveways and sidewalks, posing potential hazards for residents and visitors. The client needed a reliable solution to address the unstable soil conditions and restore the integrity of the concrete surfaces to ensure the safety and usability of these critical areas.
Solution
Soil Stabilization with Cement-Stabilized Sand
- Excavation: We began by excavating the unstable soil to a depth of 18 inches, as specified by the project architect. This step was crucial to remove all the compromised material and prepare the area for stabilization.
- Preparation and Compacting: We introduced 410 tons of 2% cement-stabilized sand, placing it in 6-inch lifts. Each layer was meticulously compacted using plate compactors. To ensure the highest quality, each layer underwent inspection by a third-party to verify a minimum compaction rate of 95%.
- Formwork and Reinforcement: After achieving the necessary compaction, formwork was set up to shape the new concrete. Reinforcement bars was then placed to provide additional structural support and ensure the durability of the concrete. The rebar helps distribute loads and prevents cracking by reinforcing the concrete.
- Final Compaction and Finishing: The final compaction was performed to ensure a smooth and durable finish. The stabilized base was then ready for concrete pouring, resulting in a seamless and resilient driveway and sidewalk surface.
Concrete Work for Driveway and Sidewalk
- Pouring New Concrete: Following the successful soil stabilization, high-quality concrete was poured for the driveway and sidewalk. This concrete mix was designed to withstand local weather conditions and heavy usage. The concrete was poured in sections to ensure an even distribution and prevent cracks.
- Surface Finishing: The concrete was carefully leveled and finished using power trowels to achieve a smooth surface. After the initial set, a curing compound was applied to enhance strength and durability. Proper curing is essential to prevent premature drying, which can lead to cracks and reduced strength.
- Expansion Joints: Properly spaced expansion joints were installed to accommodate temperature changes and prevent future cracking due to soil movement. These joints are critical in allowing the concrete to expand and contract without causing damage.
- Final Touches: Any necessary surface treatments, such as sealants or protective coatings, were applied to improve the appearance and longevity of the concrete surfaces.
Results
- Stabilized Soil: The stabilized soil provided a secure base for the new concrete surfaces, effectively preventing future subsidence.
- Cement-Stabilized Sand: The use of cement-stabilized sand and precise compaction techniques ensured the longevity of the driveway and sidewalk.
- Finished Surfaces: The smooth, finished surfaces, along with the strategic application of sealants or protective coatings, resulted in aesthetically pleasing and durable concrete structures.
- Efficient Completion: The project was completed efficiently, meeting all client requirements and ensuring their complete satisfaction.
Conclusion
This project underscores Terratek Service Group's commitment to providing top-tier soil stabilization solutions. By following stringent procedures and quality checks, we ensure that our clients receive dependable and lasting results. Our expertise in soil stabilization and concrete work guarantees the safety and longevity of residential and commercial properties alike. This case study highlights our ability to tackle challenging projects and deliver high-quality outcomes that exceed client expectations. Our meticulous approach, from the initial excavation and stabilization to the final concrete pouring and finishing, showcases our dedication to excellence and client satisfaction.
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