Excavation pit waterproofing

Contemporary projects require ever deeper excavations and ever steeper pit slopes. Any leakages are thus likely to cause even greater damage while severely compromising site safety. Problems may arise from groundwater ingress through defects and leakage paths in fractured contiguous bored piling, displaced sheet pile interlocks or diaphragm walls. Due to the scale of the threat, prompt remedial action is normally required to prevent any further damage or weakening of the subsoil. One supporting measure here involves sealing anchor heads, first temporarily and later to provide a permanent waterproof barrier.

Typically deployed injection products range from tough, elastic two-component reaction resins with foaming action to high-penetration acrylate grouts with swelling action. Other applications are possible.