Evaluation of Properties of Recycled Concretes for use in Surface and Base Course Concrete

도로표층 및 기층용 콘크리트로 재생 콘크리트의 특성 연구

This study was performed to evaluate properties of recycled concrete for roadway pavement. Recycled concretes was manufactured for the target compressive strength of 280kg/$\textrm{cm}^2$ and 180kg/$\textrm{cm}^2$ with recycled aggregate ratio of 0%, 20%, 40%, 60%, 80%, respectively. Laboratory experiment was conducted for testing properties of fresh concrete and concrete strength at curing 28days and durability by freezing and thawing treatment. The study result presented a maximum replacement ratio of recycled material.