Soil-based deformation following water-blocking material and method for producing the same

摘要

PROBLEM TO BE SOLVED: To provide a soil based deformation followable impervious material, in which a material can be easily supplied and quality variation is small by using a standardized material and which has high impervious performance and fluidity to allow its execution and which suppresses occurrence of consolidation settlement and has long-term durability, and further to provide a method for producing the soil based deformation followable impervious material.SOLUTION: The soil based deformation followable impervious material D is obtained by mixing high swellable bentonite BH having swelling power of 20 mL/2g or more in the fresh water, low swellable bentonite BL having swelling power of 5 mL/2g or less in the fresh water, sea water W and sand S having a uniformity coefficient Uc of 5 to 10. The soil based deformation followable impervious material D includes sand S in a volume ratio of 0.05 to 0.3 when total volume immediately after mixing is assumed to be 1 and a coefficient of permeability immediately after mixing is 3×10cm/s or less.