Effective diaphragm wall for a retention basin
Cost effective solution using a standard excavator
Possibly the largest retention basin in Austria is currently being built in Triestingtal (Lower Austria). Engineers at PORR were given the task of installing a diaphragm wall along the centre line of the dam during the construction phase. For this project it was decided to try a KSI injection attachment from the German manufacturer KEMROC. This modified excavator trenching tool digs into the ground, mixes the soil and injects a cement suspension into it. After hardening, what is left is a pressure resistant, impermeable soil cement structure closely connected to the adjacent rock.