This paper presents the effect of recycled aggregate on the structural design in replacement of natural aggregate. As an actual structure, the concrete airshaft in a subway under construction was chosen and design-criteria obtained from experiments in association with different ratios of recycled aggregate were applied. It was found from the analysis that recycled aggregate can be applied to real concrete structures considering just strength concept and also if other unknown problems such as quality, serviceability and so on be solved.

Abstract
 1. 서 론
 2. 해석계획 및 방법
 3. 해석결과 및 고찰
 4. 결 론
 참고문헌

• 김상철(한서대학교 인프라시스템학과) | Kim, Sang-Chel
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