Solution type grout and grout method using it

摘要

PROBLEM TO BE SOLVED: To provide a solution type grout having the permeability and the strength suitable for a stratum disposal facility for high-level radioactive waste.SOLUTION: The solution type grout mainly contains colloidal silica solution as non-alkaline liquid glass solution in which an alkaline component is removed from liquid glass solution. The main agent is added and mixed with a curing agent for curing the main agent and cellulose nanofiber which is nanofiber derived from animals and plants. As for the cellulose nanofiber, for example, vegetable fibers such as pulp are subjected to ultra high pressure homogenizer processing to apply a shearing force; thus microfibrilized cellulose nanofiber of 10-100 nm in diameter can be used.