순환잔골재 치환율에 따른 콘크리트의 역학적 특성

This experimental study was performed to investigate the mechanical properties of concrete with different replacement rate of recycled fine aggregate. Variables were replacement rate of 0%, 50% and 100% and whether or not inclusion of microfine aggregate. As the replacement rate increased, the compressive strength and the slump of recycled aggregate concrete decreased and the air content in the concrete increased. When the coarse and fine aggregates were completely replaced with the recycled aggregates, the compressive strength was decreased by 20%. And when the microfine aggregates were not included in the fine aggregates, the performance of the recycled aggregate concrete was improved.