Research on the application of perfect recycled aggregate concrete for pavement materials

Social concern regarding the environment has recently been increasing, and efforts are being made to reduce industrial waste and promote the effective utilization of construction waste. However, considering the discrepancy between the demand and supply of concrete waste, exploring new avenues for its utilization is crucial. In this study, we developed the perfect recycled aggregate concrete composed entirely using by-products and tested its production in a ready-mixed concrete plant for application to pavements. This is the first attempt of its kind in Japan. The results showed that concrete composed of by-products can be shipped and manufactured in actual plants by properly controlling the water absorption of recycled aggregates and establishing an appropriate mix proportion. This study confirmed the applicability of Japan’s first pavement material made exclusively using by-products of the constituent materials.