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http://dx.doi.org/10.5345/JKIC.2010.10.3.113

Evaluation on Mechanical and Mixing Properties of Ultra-high Strength Concrete with fck=150MPa  

Kang, Hoon (한양대학교 건축공학과)
Ahn, Jong-Mun (안산1대학 건축설계과)
Shin, Sung-Woo (한양대학교 건축공학과)
Publication Information
Journal of the Korea Institute of Building Construction / v.10, no.3, 2010 , pp. 113-120 More about this Journal
Abstract
Ultra-High Strength Concrete (UHSC) demands a clear presentation of its mechanical properties, as distinct from normal strength concrete, and an evaluation of the serviceability of high-rise buildings that use ultra-high strength concrete. Ultra-high strength concrete fck=150MPa was manufactured with pre-mix cement, and an experimental study was conducted to evaluate the mixing properties and compressive strength, with the major variables being unit cement contents, water-binder ratio, and type of pre-mix cement. The test result showed that 150MPa concrete requires about 6~7 minutes of mixing time until each of the materials (ordinary Portland cement, silica fume, blast-furnace slag powder and anhydrite) are sufficiently revitalized. The slump flow of fresh concrete was shown to be about 700~800mm with the proper viscosity. The average value of concrete compressive strength was shown to be about 70% in 7 days, 85% in 14 days, and 95% in 28 days, for 56 days of concrete material age.
Keywords
Ultra-high Strength Concrete; Slump Flow; Compressive Strength; 150MPa;
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Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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