Deterioration of Building Stones

Part 2 Deterioration of Stones with Sealant and Removal Method

Abstract

This report examined deterioration of building stones(granite) to be use exterior wall and column by dry construction method. The examination executed the elements analysis of sealant and stones with FT-IR analysis meter and EDX analysis meter. And there examined a kind of sealant, mixing time of sealant, vacancy or not of primer with artificial promotion testing to can reproduce the deterioration of building stones. As a result. It was found as follows deterioration of building stones was caused by migration from the plasticizer of sealant to the stones in consequence for unsuitable of mixing the base compound with the curing agent and coating primer, and imperfect of back-up material. It was corroborated that special compositeness chelating agent was effective to remove the deterioration of building stones.