Svensk Kärnbränslehantering AB Swedish Nuclear Fuel and Waste Management Co Box 250, SE-101 24 Stockholm Phone +46 8 459 84 00 R-09-07 Low pH self compacting concrete for deposition tunnel plugs Carsten Vogt, Björn Lagerblad, Kjell Wallin, Franziska Baldy Swedish Cement and Concrete Research Institute (CBI) Jan-Erik Jonasson, Luleå Technical University (LTU) April 2009