Abstract:The influence of moisture condition(oven dry, air dry, saturated surface dry) of recycled coarse aggregate on the rheological properties of fresh concrete was studied, and the early mechanical and durability properties were also tested. The results show that the moisture condition of recycled coarse aggregate plays a significant part in the rheological properties of fresh concrete. Although the free water content of the fresh concrete has little effect on the dynamic yield stress of fresh concrete, it can significantly affect the corresponding static yield stress and plastic viscosity. Besides, the recycled coarse aggregate in air dry condition has the least adverse effect on compressive strength among all the 3 conditions examined in this study.