WATERPROOF SHEET FOR TUNNEL, WATERPROOF METHOD FOR TUNNEL AND TUNNEL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a waterproof sheet for a tunnel by which a breakage part is repaired and a continuation of water leakage is prevented when a breakage occurs.;SOLUTION: A waterproof sheet 10 for a tunnel is provided with a rubber sheet 11 which includes a vulcanization rubber wherein a water expansion magnification of the rubber sheet 11 is 1.1 to 5 times in volume ratio. A nonwoven fabric or woven fabric of 0.1 to 1 mm of thickness is adherend at least on one surface of the rubber sheet 11. The vulcanization rubber contains a vulcanized body of a chloroprene rubber and a toluene insoluble amount of the vulcanization rubber is 5 to 50 mass%.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT