In recent years, with the increasing scale and depth of shield tunneling in urban areas, controlling the eruption of excavated soil has become an extremely important factor in minimizing the impact on surrounding structures and ensuring safety within the tunnel. In addition, when handling large quantities of soil in a short time, there has been a demand for immediate effectiveness in soil transportation, reduced adhesion to transport equipment, and improved detachability.
Clean SP-NL is primarily composed of emulsion-type synthetic polymers and was developed as a material that, in small amounts, aggregates and granulates soil and sand, improving its fluidity and reducing its stickiness.