The Petrographic and Chemical Properties of Recycled Aggregate, and the Resistance of Concrete by Replacement Ratios of Recycled Aggregate to Rapid Freezing and Thawing

재생골재의 광물학적 및 화학적 특성과 대체율에 따른 동결융해 저항성

The availability of natural aggregates has decreased in recent years due to depleting reserves. From the viewpoint of energy and resources saving, it may be advantageous to use the waste concrete as construction aggregates. The purpose of this study is to analyze petrographic and chemical properties of recycled aggregate, and to investigate the resistance of concrete to rapid freezing and thawing by using replacement ratios (0, 10, 20, 30, 40, 50, 60, 70, 100% ) of recycled aggregate.