슬래그와 바텀애시를 잔골재로 혼입한 포러스콘크리트의 충전상태 및 물리적 공학특성에 관한 실험적 연구 (An Experimental Study on the Filled State and Physical Engineering Properties of Porous Concrete Utilizing Slag and Bottom Ash as Fine Aggregate)

서지정보

· 발행기관 : 한국폐기물자원순환학회
· 수록지 정보 : 한국폐기물자원순환학회지 / 27권 / 2호 / 165 ~ 172페이지
· 저자명 : 박승범, 장영일, 이병재, 전흠진, 박성현

초록

This study was performed to recycle industrial by-products (slag, bottom ash) as fine aggregate for concrete, and evaluated the filled state and physical engineering properties of porous concrete utilizing the fine aggregate produced. This study then analyzed the effect of mixing fine aggregate on the various properties of the concrete. As the mixing ratio of each type? fine aggregate increased, the void ratio and permeability coefficient tended to increase. In the void distribution analysis results, the voids formed at the upper/middle/bottom part of the porous concrete specimens utilizing fine aggregate are distributed more evenly than if the fine aggregate is not mixed. In addition, a problem occurred as the bottom of the specimens was filled and clogged with paste, causing significant reduction of water permeability when only cement is used to manufacture the concrete. The compressive strength and freeze-thaw resistance tended to decrease as more fine aggregate was mixed. From the results of this study it can be seen that when designing the porous concrete for domestic hydraulic structures applying target void ratio of 10% and 20%, the optimal mixing ratio of fine aggregate is approximately 10%, 5% respectively.

영어초록

This study was performed to recycle industrial by-products (slag, bottom ash) as fine aggregate for concrete, and evaluated the filled state and physical engineering properties of porous concrete utilizing the fine aggregate produced. This study then analyzed the effect of mixing fine aggregate on the various properties of the concrete. As the mixing ratio of each type? fine aggregate increased, the void ratio and permeability coefficient tended to increase. In the void distribution analysis results, the voids formed at the upper/middle/bottom part of the porous concrete specimens utilizing fine aggregate are distributed more evenly than if the fine aggregate is not mixed. In addition, a problem occurred as the bottom of the specimens was filled and clogged with paste, causing significant reduction of water permeability when only cement is used to manufacture the concrete. The compressive strength and freeze-thaw resistance tended to decrease as more fine aggregate was mixed. From the results of this study it can be seen that when designing the porous concrete for domestic hydraulic structures applying target void ratio of 10% and 20%, the optimal mixing ratio of fine aggregate is approximately 10%, 5% respectively.

참고자료

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