This study investigated filling performance of concrete which can pass between reinforcing bars and be fully filled, and examined fundamental properties of concrete which is before or after hardened stat, in response to maximum size of coarse aggregate. This study was also originally intended to find out one of the method than can improve concrete quality, using crushed coarse aggregate. Test showed that passing ratio of concrete decreased as aggregate size increased and as space between reinforcing bars decreased. In addition concrete using bigger size of coarse aggregate exhibited slightly higher compressive strength and showed lower length change ratio of drying shrinkage.