ABSTRACT
Diaphragm walls are a major construction element in foundation engineering. They usually have one of the two following functions: (1) sealing of geomaterials (earth or rock) against the flow of fluids and transport of solutes and solids and (2) support of structures as a structural wall element in a trench. The sealing function is not limited to hydraulic structures but also includes environmental applications such as the containment of waste disposal sites and sanitary landfills. The treatment of diaphragm walls in this Bulletin is restricted to their application and sealing function in dam engineering.
