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http://dx.doi.org/10.4334/JKCI.2010.22.3.287

An Experimental Study on Mechanical Properties of Ultra-High Strength Powder Concrete  

Jo, Byung-Wan (Dept. of Civil and Environment Engineering, Hanyang University)
Yoon, Kwang-Won (Dept. of Civil and Environment Engineering, Hanyang University)
Park, Jung-Hoon (Dept. of Civil and Environment Engineering, Hanyang University)
Kim, Heoun (Dept. of Civil and Environment Engineering, Hanyang University)
Publication Information
Journal of the Korea Concrete Institute / v.22, no.3, 2010 , pp. 287-295 More about this Journal
Abstract
In this study, ordinary Portland cement was used and the air void was minimized by using minute quartz as the filler. In addition, steel fibers were used to mitigate the brittle failure problem associated with high strength concrete. This study is in progress to make an Ultra-high strength powdered concrete (UHSPC) which has compressive strength over 300 MPa. To increase the strength of concrete, we have compared and analyzed the compressive strengths of the concretes with different mix proportions and curing conditions by selecting quartz sand, dolomite, bauxite, ferro silicon which have diameters less than 0.6 mm and can increase the bond strength of the transition zone. Ultra-high strength powdered concrete, which is different from conventional concrete, is highly influenced by the materials in the mix. In the study, the highest compressive strength of the powdered concrete was obtained when it is prepared with ferro silicon, followed in order by Bauxite, Dolomite, and Quartz sand. The amount of ferro silicon, when the highest strength was obtained, was 110%, of the weight of the cement. SEM analysis of the UHSPC showed that significant formation of C-S-H and Tobermorite due to high temperature and pressure curing. Production of Ultrahigh strength powdered concrete which has 28-day compressive strength upto 341MPa has been successfully achieved by the following factors; steel fiber reinforcement, fine particled aggregates, and the filling powder to minimize the void space, and the reactive materials.
Keywords
ultra high strength powder concrete; ferro-silicon; compressive strength; high temperature-pressure curing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 윤영기, 윤희석, 홍성길, “Fe-6.5wt% Si 합금의 역학특성에 미치는 어닐링 효과,” 대한토목학회 논문집, 24권, 12A호, 2000, pp. 2909-2916.   과학기술학회마을
2 박정준, 고경택, 강수태, 김성욱, “초고강도 강섬유 보강 시멘트 복합체의 구성인자가 압축강도에 미치는 영향,” 콘크리트학회 논문집, 17권, 1호, 2005, pp. 35-41.   과학기술학회마을   DOI   ScienceOn
3 한만덕, “강섬유를 혼입한 고강도 콘크리트의 역학적 특징,” 한양대학교 토목공학과 일반대학원, 2005, pp. 21-30.
4 문한영, 김기형, “고성능감수제를 사용한 시멘트복합체의 유동성 손실에 대한 연구,” 콘크리트학회 논문집, 4권, 2호, 1992, pp. 119-126.   과학기술학회마을
5 Mazloom, M., Ramezanianpour, A. A., and Brooks, J. J., “Effect of Silica Fume on Mechanical Properties of High-strength Concrete,” Cement and Concrete Composites, Vol. 26, Issue 4, 2004, pp. 347-357.   DOI   ScienceOn
6 임재훈, “Ferro-Silicon을 활용한 초고강도 분체 콘크리트개발에 관한 실험적 연구,” 한양대학교 토목공학과 일반대학원, 2008, pp. 30-41.
7 조병완, 박승국, 김창현, 임재훈, 이연진, 오세영, “Ferroalloy를 활용한 초고강도 콘크리트의 개발에 관한 실험적 연구,” 한국콘크리트학회 봄 학술대회 논문집, 19권 1호, 2007, pp. 533-536.
8 최상흘, Cement Chemistry, 한양대학교 시멘트연구실, 1997, pp. 24-36.
9 Richard, P. and Cheyrezy, M. H., “Reactive Powder Concretes with High Ductility and 200-800MPa Compressive Strength,” ACI Spring Convention, San Francisco, SP 144-24, 1994, pp. 507-517.
10 손유신, 김한준, 김규동, 이승훈, “설계강도 150 MPa 초고강도 콘크리트 개발,” 한국콘크리트학회 봄 학술대회 논문집, 18권, 1호, 2006, pp. 29-32.   과학기술학회마을
11 고경택, 박정준, 류금성, 강수태, “양생방법이 초고강도 강섬유 보강 시멘트 복합체의 압축강도에 미치는 영향,” 대한토목학회 논문집, 27권, 3A호, 2004, pp. 427-432.
12 배수호, “RPC를 사용한 초고강도, 고인성 콘크리트의 기술개발 현황,” 콘크리트학회지, 15권, 3호, 2003, pp. 129-133.
13 Richard, P. and Cheyrezy, M., “Composition of Reactive Powder Concretes,” Cement and Concrete Research, Vol. 25, Issue 7, 1995, pp. 1501-1511.   DOI   ScienceOn