굵은골재의 최대치수가 콘크리트의 간극통과성에 미치는 영향

Effect of Maximum Size of Coarse Aggregate on Passing Performance of Concrete between Reinforcing Bars

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 state, in response to maximum size of coarse aggregate. This study was also originally intended to find out one of the method that can improve concrete quality, using crushed coarse aggregate. Test showed that passing ratio of concrete decreased as aggregate site 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.