Repair method of concrete structures using a cement material deposition holding material and the holding material

摘要

PROBLEM TO BE SOLVED: To provide an adhesion holding material for a cement material capable of keeping excellent adhesion between a concrete structure surface and a cement repair material even when a construction temperature is below 5°C, and to provide a repair method of a concrete structure using the holding material.;SOLUTION: This adhesion holding material for a cement material which is used under a temperature environment below 5°C is an aqueous solution in which a material selected from a group comprising sodium nitrite, lithium nitrite, calcium nitrate and calcium nitrite is dissolved at solid concentration of 5-50 mass%. The adhesion holding material is applied onto a concrete structure, and then a cement-based material is placed, to thereby acquire excellent adhesion strength at the environmental temperature of ≤5°C.;COPYRIGHT: (C)2012,JPO&INPIT