Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)
- 1996.04a
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- Pages.101-106
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- 1996
Development of the Concrete for Concrete Filled Steel Tubular Columns
강관충전용 콘크리트의 재료개발에 관한 연구
Abstract
In this study, filling performance of concrete is investigated experimentally for the developmenmt of the concrete to be used in concrete filled steel tubular columns with inner diaphrams. Water-cement ratio with 3 levels, unit water contents with 5 levels, unit coarse aggregate contents with 5 levels, and slump flow with 3 levels are selected for test variables. For the estimation of the filling properties of the concrete, slump flow, V-type funnel time, U-type box height are measured and compared. A device which simulates the steel tubular column is designed and three kinds of concrete are tested with it. As the results, the filling performance is decreased with increasing coarse aggregate content. And, within the scope of this study, concretes with coarse aggregate content less than 880 kg/
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