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How Seawall Foam Repair Works

Seawall Foam Repair is a fast and cost-effective method for stabilizing and compacting loose soils, filling voids, and sealing cracks and separated joints. The process is an excellent solution for seawall restoration and avoiding replacement.

Seawall Repair with polyurethane foam injection is a fast and cost-effective method for stabilizing and compacting loose soils, filling voids, and sealing cracks and separated joints.  The process is an excellent solution for seawall restoration and avoiding replacement.

Seawall foam repair is completed using a single component polyurethane system.  This polyurethane is ideal because it permeates the soil and compromised areas of the seawall in liquid form and then reacts and expands to stabilize the soils and to seal the cracks.  The polyurethane is light-weight and but is also devoid of compressive strength, so while it strengthens soils by forming them into a polyurethane soil composite, it doesn’t have the risk of blowing out your seawall like other polyurethane systems.

Below is a quick breakdown of the application process.  In summary, the weak soils zones are identified through the site assessment, the weak soil zones are treated with a bottom up injection process to ensure complete soil stabilization, the polyurethane cures and locks the soil into a polyurethane soil composite matrix to ensure long-lasting and highly resistant strata that will protect the wall from future erosion. 

The above video displays the seawall foam repair process using NCFI’s Single Component polyurethanes.  The permeation grout is the highest quality in the industry and ensures your seawall repair is conducted with the best materials available. 

Application Process

The application of polyurethane chemical grout injection involves several key steps:

  1. Site Assessment: We assess the condition of the seawall bulkhead and the underlying soil to determine the extent of the damage and the required grout injection. This is done through visual inspection, probes to determine weak soil locations, and flagging for treatment.
  2. Injection: at the week soil points, we insert a rod that is long enough to reach the base of the seawall and then we inject the polyurethane from bottom to top, to ensure we saturate the entire soil layer.
  3. Curing: The injected grout material cures rapidly, creating a strong, stable, and water-resistant barrier within the soil.
Flags marking the weak soil spot locations after the site assessment.

Benefits of Polyurethane Chemical Grout Injection

  1. Enhanced Resilience: Stabilized soil can better withstand soil erosion and degradation, increasing the longevity and effectiveness of seawall bulkheads.
  2. Minimal Disruption: The non-invasive nature of grout injection minimizes disruptions to the surrounding environment and allows for efficient repairs.
  3. Cost-Effective: Repairing and reinforcing seawall bulkheads using polyurethane grout can be more cost-effective compared to traditional methods that involve extensive excavation.
  4. Versatility: Polyurethane grout injection can be used to address a variety of soil stabilization needs in coastal infrastructure, making it a versatile solution.

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