| 摘要 |
<p><P>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. <P>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. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
