【摘 要】
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In this paper, the rheological behaviors of self-compacting concretes (SCC) with different mixing proportions were studied by rheometer and their influence
【机 构】
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School of Civil Engineering, Harbin Institute of technology, 150000, China
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
In this paper, the rheological behaviors of self-compacting concretes (SCC) with different mixing proportions were studied by rheometer and their influence on distinct-layer casting performance of concrete were experimentally evaluated.The mixing proportion factors include different replacement levels of fly ash and ground granulated blast-furnace slag (GGBS), different dosage of retarder and different w/b ratio.The results show that the addition of fly ash and a higher w/b ratio reduce the shear stress and viscosity of fresh SCC, and make SCC more shear thickening, while different amount of GGBS has different effects on the rheological performances of concrete.The more addition of fly ash, retarder and the higher w/b ratio result in the lower loss of relative mechanical strength of specimens that were prepared by using the distinct-layer casting and self-compacting way.
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