CUTOFF WALL FOR BLOCKING THE MOVEMENT OF CONTAMINATED UNDERGROUND WATER WITH FILLER COMPOSED OF SAND, SILT AND BENTONITE

摘要

Purpose: a key-wall is arranged to have optimum workability and calculates hyposmosis coefficient lower than the value suggested for blocking the movement of contaminated underground water in a building site. Construction: key-wall, for blocking the movement of contaminated underground water, it is made of containing filler 86-88 weight percent sand, 10-12 weight percent mud and 2-4 weight percent bentonites, wherein the moisture content of filler is controlled the slump value with 5-15 centimetres.