Preparation and Durability of Recycled Aggregate Concrete with High Strength

With the growth of waste concrete, many experts and scholars at home and abroad start to study the physical and mechanical properties of recycled aggregate concrete. However, most of the research is focus on recycled concrete with low strength which can only be applied for non-bearing structure. This paper proposes a new recycling process of recycled aggregates to produce recycled aggregate concrete with high strength. The strength of recycled aggregate concrete with different replacement content of recycled aggregate are investigated. The results show that the strength of recycled aggregate concrete with replacement rate of 50% recycled coarse aggregate and 30% recycled fine aggregate is more than 50 Mpa.