wallfilling

Wallfilling is a construction technique used to create a solid, watertight barrier by filling the gaps between two layers of material. This method is commonly employed in the construction of underground structures, such as basements, tunnels, and underground storage facilities, to prevent water infiltration and maintain structural integrity. The process typically involves the following steps: first, a primary layer, often made of concrete or another durable material, is laid down to form the base. Next, a secondary layer, usually composed of a more permeable material like gravel or sand, is placed on top of the primary layer. The gaps between the two layers are then filled with a suitable material, such as bentonite clay or cement grout, to create a seamless barrier. This technique is particularly useful in areas with high water tables or where soil conditions are challenging. Wallfilling ensures that the structure remains dry and stable, protecting it from potential damage caused by water ingress.