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한국건축시공학회 / v.3, no.3, 2003년, pp.107-112 
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부순모래를 사용한 콘크리트의 현장 품질 특성에 관한 실험 연구
( Investigation on Properties of Concrete with Crushed Sand on Site ) |
| 이성복;이도헌;지남용; 대한주택공사 주택도시연구원;대한주택공사 주택도시연구원;한양대학교 건축공학부;
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| 초 록 |
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| This study is to investigate the properties of concrete with crushed sand on site and to propose a quality guideline for its use as artificial sand and concrete. From our experimental result in laboratory and site, we found that demand water of concrete with crushed sand for target slump increased by 18kg/m3 compared to mixed sand and l8kg/m3 compared to sea sand respectively. The compressive strength increased by around 3∼6% when compared to concrete with sea sand. Accordingly, our study showed that the combined sand mixed with sea sand would be desirable to obtain workability and strength of concrete including dry shrinkage and bleeding test. Furthermore, the optimal replacement percentage of crushed sand was 50% with sea sand. As such, crushed sand would be sufficient as fine aggregate for concrete in terms of economic efficiency and quality. Crushed sand, on the other hand can only be used as fine aggregate when VFS(Very Fine Sand) is below 3.5 percentage of weight of sand and particle shape is above 55 percentage. Also, the particle shape and microsand passing NO.200 sieve should continually be improved to increase workability of concrete on site. |
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| 키워드 |
| 부순모래;입형판정실적율;잔입자함유량;건조수축;유동성;Crushed sand;Particle shape;Very Fine Sand;Dry shrinkage;Workability; |
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한국건축시공학회지 / v.3, no.3, 2003년, pp.107-112
한국건축시공학회
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921973356)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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