Abstract
The purpose of this study is to clarify the durability of the adhesion joint in a real steel structure and to establish a method of the estimation of its durability. At first, we estimated the lifetime of adhesion joints used for houses that were really built 10, 15 and 20 years ago. However, we had no samples prepared from adhesion joints used for houses that were really built more than 20 years ago, so we had to estimate the lifetime of adhesion joints over 20 years by another method. We showed a lifetime estimate method that is estimated by using an appropriate coefficient of degradation promotion obtained from comparing degradation promotion test results with evaluation results of adhesion joints of houses that were really built. In this method, the degradation promotion condition must be highly correlated to a real environmental condition and the destruction mode of both tests was always cohesive destruction.From this method, we were able to prove that this adhesion joint had over 90 years durability that was necessary for long-lifehouses.
