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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.8
- 수록면
- 97 - 104 (8page)
이용수
초록· 키워드
오류제보하기
Enormous side products and wastes have been produced from industrial activities. Besides fly ash, powder of furnace slag, and calcium deposits, tens of million tons of concrete products are discarded annually. These side products and wastes are recycled in various ways in line with their properties. However, some wastes such as crushed stone powder, glass, and wood wastes have exhibited very low recycle rates despite of their enormous amounts. These wastes are not economically feasible mainly due to high contents of impurities and moisture. This study carried out experiments substituting silica power in an cement extruding process for 50% crushed stone powder. Physical properties and hydrothermal characteristics of the crushed stone power were analyzed depending on the replacement and curing methods.
Consequently, when 50% crushed stone powder was replaced, the overall rigidity of the product was less than that of the cement product with silica powder; however, the compressive strength turned out to be 90% of that in the silica powder product depending on secondary curing conditions. In this case, the pre-curing period was maintained in 2 hours while the primary and tertiary curing was carried out for 4 hours so that the overall compressive strength of the product with the crushed stone powder did not deteriorate the product quality.
Therefore, changes in physical properties of the concrete product using the crushed stone power are not assumed to be significant when it is supplemented by SiO₂ sources to maintain the appropriate C/S mole ratio, and the hydrothermal reaction was also adequately activated.
Consequently, when 50% crushed stone powder was replaced, the overall rigidity of the product was less than that of the cement product with silica powder; however, the compressive strength turned out to be 90% of that in the silica powder product depending on secondary curing conditions. In this case, the pre-curing period was maintained in 2 hours while the primary and tertiary curing was carried out for 4 hours so that the overall compressive strength of the product with the crushed stone powder did not deteriorate the product quality.
Therefore, changes in physical properties of the concrete product using the crushed stone power are not assumed to be significant when it is supplemented by SiO₂ sources to maintain the appropriate C/S mole ratio, and the hydrothermal reaction was also adequately activated.
목차
Abstract
1. 서론
2. 이론적 배경
3. 실험계획 및 방법
4. 결과 분석
5. 결론
참고문헌
참고문헌 (4)
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