| Abstract: | Materials Management and Concrete Technology on the Lötschberg Base Tunnel During construction of the 34.6 km long Lötschberg base tunnel some 16 million tonnes of material was excavated; 10 million tonnes in the south section and 6 million tonnes in the north section. A comprehensive global concept was developed for materials management. Central to this concept was the processing of excavated material into concrete aggregate used for constructing the concrete structures of the project. Of particular interest is the fact that it was possible to produce AAR stable concrete from aggregate which was partially alkali aggregate reactive. |
