GeoTech™ & ACU PolySS Soil Stabilizer is a low viscosity, polyurethane resin designed to stabilize sandy soil when medium or high strength is required. When mixed with catalyst and injected, it migrates through loose soil and into below‐grade voids. As it comes into contact with moisture in the soil, it reacts and forms non‐expanding polyurethane that is resistant to most organic solvents, mild acids and bases, and micro‐organisms. The polyurethane encapsulates loose soil, fills voids, and forms a solid, water‐tight barrier.