A common cause of failure in seawalls is the breakdown of filter fabric behind the seawall, leading to soil migration and the creation of voids behind the wall. This process, coupled with hydrostatic pressure, can lead to the shifting of wall panels and, eventually, structural failure. Recognizing these issues, Seawall Repair Network® has developed a comprehensive, proprietary repair process to address and mitigate these problems effectively.
The Seawall Repair Process
The repair process begins with deep injections of SW-RP1 directly behind each panel joint of the seawall. This step fills voids and strengthens the soil, essentially turning it into a solid, bedrock-like substance.
Following the injections, a new pressure relief system is created. This involves coring through the weephole channels and the layer of resin installed behind them, extending into the soil on the landward side. The proprietary pressure release technology installed during this phase plays a pivotal role in regulating hydrostatic pressure and preventing erosion from future water intrusion.
Next, cracks in seawall caps are repaired with high-strength epoxy and concrete materials to restore strength and integrity to the top side of the structure.
If necessary, steel tiebacks are installed to halt future movement in high-risk areas of the seawall. The tiebacks anchor into the load-bearing solid ground behind the structure.
Environmental Considerations and Benefits
An important aspect of this repair method is its environmental friendliness. The SW-RP1 material is NSF third-party certified for contact with drinking water and is safe for marine life, offering a sustainable solution to seawall repair.
Cost and Time Efficiency
One of the most significant advantages of this repair process is its cost-effectiveness. By opting for this advanced, non-invasive method, property owners can save up to 80% of the costs associated with complete seawall replacement. Additionally, the time required for the repair is a fraction of that needed for a full replacement, minimizing disruption and inconvenience.