재생골재콘크리트의 공학적 특성에 미치는 재생골재 혼합조건의 영향에 관한 실험적 연구 (제 1보, 실험계획 및 아직 굳지 않은 유동화 특성을 중심으로 )

An Experimental Study on the Replacement Proportion of Recycled Aggregate Effecting in the Engineering Properties of Recycled Concrete (Part 1, Experimental Program and Fluidity Performance of Fresh Concrete

The study of recycled aggregate concrete in which demolition waste is utilized to produce aggregate for new concrete, can contribute to the solution of two problems. The first is the shortage of aggregate from river, and the second is the waste disposal problem. In comparison with natural aggregate concrete, recycled aggregate concrete shows reductions in compressive strength, tensile strength , vending strength, shear strength and increases in drying shrinkage and creep. Recycled aggregate concrete may also be less durable due to increase in porosity and permeability. Therefore, the purpose of this study is to analyze the applicability of recycled concrete in the influence of a substitute ratio of recycled sand gravel.