Abstract
The objective of this study is to evaluate non-uniform quality of materials achieved in RC structures. In order to quantify the influences of structural size, reinforcement arrangement, slump value, and construction methods on the segregation, RC column and beam were made. As a material parameter showing the segregation, porosity of core specimens picked up from structures were measured. By using multiple regression analysis, the authors proposed a simple method that can evaluate the influence of each factor on the segregation and can give the non-uniform quality of materials achieved in RC structures. For applying the obtained test results to the evaluation of long-term durability performance, accelerated carbonation test and comparison the test results with durability index proposed by JSCE were also examined. From these studies, it was shown that the proposed method can be used for the quantitative evaluation of material qualities in RC structures and durability performances.
