Frost Heave Mitigation
CST provides frost heave mitigation with a controlled injection of an expanding structural geotechnical polyurethane. Our process creates a continuous three inch thick layer of insulation that significantly reduces heat loss from deep soils, preventing upward movement of water from the warmer regime under the foam to the upper frozen regime above the foam. The process prevents segregational freezing in the upper zone and prevents upward heave.
Roadway Settlement Repair
CST provides Departments of Transportation with the CST Deep Injection Process, whereby a structural industrial grade polyurethane is injected into the base soils of the roadway to stabilize and reestablish the weight-bearing capacity of the soil. The roadway can be compromised due to a variety of issues: age, repurposing, geological, prior construction techniques, continuous vibration, etc. The CST polymers are a powerful tool for rehabilitating the roadway, as its application is versatile for repairing a wide scope of problematic conditions.
Here’s how it works: The polymers are injected through 5/8″ holes through the surface of the roadway, whereby 1/2″ steel rods are inserted into the problem zones underneath the roadway. The polymer is then injected into the subsurface to stabilize and densify the weak zones. The polymer initially enters the zone in liquid form and then begins to expand throughout the soil media, binding the soils and pushing away any water that may be present. This allows public works directors and engineers to utilize the CST product for multiple roadway repair applications, including problems relating to sewer failure or soil loss.
Sewer Inflow and Infiltration
CST offers innovative solutions for trenchless sewer repair, manhole rehabilitation and culvert repair. Our chemical grout injection process is highly adaptable and non-disruptive, allowing for public works managers and engineers to design a sewer repair solution that is cost-effective and minimizes operational downtime of facilities and roadways.
The trenchless sewer repair process is ideal for both sanitary and stormwater sewer systems as well as culverts, outfalls, drainage systems, culverts and utility trenches. Learn more here…
Bridge Abutment and Footer Rehabilitation
CST provides Engineers, Transportation Departments and City and County municipalities with innovative bridge approach slab repair solutions. Bridge approach slabs are susceptible to settlement due to a variety of external factors that degrade the roadway base soils over time, such as continual vibration, water movement and drainage, or failures of other soil containment systems.
CST offers a no-excavation solution for bridge approach slab repair through the use of high-density, light-weight structural polymers. The polymers are injected beneath the concrete slab through ½” metal rods that are inserted through the slab and into the weak soil zones. Because the polymers are hydrophobic, any standing water will be pushed out and the soils will be protected against future degradation from water flow or vibration.
Railroad Ballast Stabilization
Airport Runway Leveling and Stabilization
Frost Heave Mitigation with Polyurethane Injection
Polyurethane injection for Frost Heave Mitigation is a non-invasive rehabilitation approach. The process works as follows:
- Injections are made through 5/8” holes that are drilled through the slab
- Once Injected, the polyurethane travels throughout the voids and expands up to 25 times through the soil
- The polyurethane is a high-density, structural polyurethane that insulates the soil against heat loss and segregational freezing.
WHY CHOOSE US?
HONEST AND DEPENDABLE
We ensure that our team operates with the highest level of integrity and diligence, to ensure our projects are completed to the highest levels of quality and customer service.
We are the most experienced provider of Polyurethane Soil Stabilization applications, including solutions like concrete leveling, water control, carbon fiber concrete reinforcement and soil swelling mitigation and trenchless sewer repair. We place great emphasis on research and design and continuously innovating our applications and the foundation lifting industry.