Targeted Grout Injection
The best way to repair a damaged seawall is by using TGI or Targeted Grout Injection. This is done by injecting polyurethane resin to prevent leaks and fill underground voids.
Prime Resin Products
Prime Resin products are non-reactive and harmless. These products are certified for use by ANSI/NSF and are typically used to fill underground voids.
This process involves inserting helical piers into the ground behind the seawall until it reaches stable soil. At that point, they can be used to straighten and stabilize the seawall.
Drainage systems can be installed behind the seawall to prevent water from pooling and eroding the soil. Weepholes are sometimes installed or repaired. Other options include drain tiles and a French drain.
Seawalls can be reinforced using methods such as steel rods, fiber-reinforced polymers, or geosynthetic materials. These materials can be used to increase the strength and stability of the seawall and can be incorporated into new construction or used to retrofit existing seawalls.