CARBONATION SUPPRESSIVE EFFECTS OF COATING MATERIALS FOR TEXTURED FINISHES BASED ON THE RESEARCH OF AIR PERMEABILITY COEFFICIENT AND CARBONATION DEPTH OF COATING MATERIALS FOR TEXTURED FINISHES OF THE EXISTING STRUCTURE

We determined the air permeability coefficient of coating materials for textured finishes by the double chamber method and carbonation depth on the existing structure where years since construction passes. And we verified the application to the presumption method of carbonation depth of coating materials for textured finishes based on air permeability coefficient. As a result of this, it was confirmed that we can presume the carbonation depth of a concrete which is given coating materials for textured finishes with the diffusion coefficient and the carbonation resistance from a measured result of air permeability coefficient, even if that coating materials for textured finishes degrades. In addition, the study demonstrated that the carbonation progress of concrete with a coating materials for textured finishes can be predicted precisely, using the presumption method of carbonation progress by the air permeability coefficient considering the aging of coating materials for textured finishes.