Study on the deterioration factors in exterior walls of residences

Abstract

The purpose of this study is to grasp the climatic loads to estimate the durability of ceramic sidings in different part, region or direction. In this research, a simultaneous heat and moisture transfer analysis was conducted, focusing on the vent layer which has a large influence on durability of exterior materials. From the results of full scale exposure test, it is observed that the temperature in vent layer near the surface of the ground was lower than the other parts, the temperature below the window was observed to be higher due to the air strage. The temperature below the breather was not affected by the ambient temperature but by the indoor temperature. Also the results were examined by the simultaneous heat and moisture transport analysis in unsteady state which showed a smaller temperature than the measured temperature. In addition, by using the local durability factor obtained by the exposure test , the climatic degradation loads are examined by the analysis.