Performance and properties of concrete in diaphragm walls - Swedish Experiences

Paper in proceeding, 2007

Diaphragm walls are a type of geotechnical structures, which mainly are used to stabilize deep excavations built in densely populated areas. The most common type of diaphragm walls are cast in-situ in submerged conditions in a support liquid used to stabilize the excavation. There are concerns that the construction method may negatively influence the properties of the finalized structure. However, up to now little research has been done regarding the significance of this influence. Therefore during the last years in Sweden two recently constructed diaphragm walls have been investigated. In this paper some results from these investigations are presented. The results show that there is only a slight negative influence on the properties of the concrete in diaphragm walls compared to conventional structures.