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Influence of Constitute Factor on the Compressive Strength of Ultra-High Strength Steel Fiber Reinforced Cementitious Composites
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 Title & Authors
Influence of Constitute Factor on the Compressive Strength of Ultra-High Strength Steel Fiber Reinforced Cementitious Composites
Park Jung-Jun; Koh Kyung-Taek; Kang Su-Tae; Kim Sung-Wook;
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Recently, various fiber reinforced cementitious composites are used in order to solve problems of concrete as the brittleness breaking. Especially, in U.S.A., Europe, and Japan, ultra-high strength steel fiber reinforced cementitious composites(ultra-high strength SFRCC) with compressive strength in excess of 100 MPa were developed. However few studies have been investigated on the high-strength SFRCC in Korea. Therefore, in this paper, to make ultra-high strength SFRCC with the range of compressive strength 180MPa, it was investigated the constitute factors of ultra-high strength SFRCC influenced on the compressive strength. The experimental variables were water-binder ratio, replacement of silica fume, size and proportion of sand, type and replacement of filling powder, and using of steel fiber in ultra-high strength SFRCC. As a result, in water-binder ratio 0.20, we could make ultra-high strength SFRCC with compressive strength of 180MPa through using of silica fume, quartz sand with below 0.5mm filling powder and steel fiber.
ultra-high strength;steel fiber;cementitious composite;compressive strength of 180MPa;
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