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Title |
Flow Experiments and Analysis of Highly Flowable Concrete Considering the Effect of Dosages of SP Admixture and W/C Ratios
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Authors |
조창근(Chang-Geun Cho) ; 김화중(Wha-Jung Kim) ; 최열(Yeol Choi) |
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DOI |
https://doi.org/10.4334/JKCI.2014.26.6.671 |
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Keywords |
초유동 콘크리트 ; 입자법 ; 물시멘트비 ; SP 혼화제 ; L형 박스 흐름시험 ; highly flowable concrete ; particle method ; water-cement ratio ; SP admixture ; L-box flow test |
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Abstract |
In this research, flow experiments and simulation of highly flowable concrete has been attempted using a viscoplastic particle method varying with dosages of SP admixture and water-cement (W/C) ratios. Rheological and flow characteristics of flowable concrete manufactured in domestic products of cement, aggregates, and SP admixtures were investigated by experimental programs varying with mix proportions. From experiment, the predictive model of rheological characteristics of flowable concrete has been newly proposed considering with the effects of the W/C ratio and the dosage of SP admixture, and the effect of mixing proportion has also been incorporated into shear stress and strain rate curve of flowable concrete in the current method. A series of L-box flow test of highly flowable concrete varying with dosages of SP admixture and W/C ratios was compared with the proposed model.
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