Research on and application of stone chip as a substitute of river sand in concrete
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1. Guangdong Provincial Hangsheng Construction Group Co., Ltd., Guangzhou 511442, China;2. Civil Engineering Department,South China University of Technology, Guangzhou 510640, China;3. State Key Laboratory of Subtropical Building Science,South China University of Technology, Guangzhou 510640, China

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    Abstract:

    The experiments about the stone chip with high stone powder (the content of stone powder is larger than 10%) as a substitute of river sand were carried out. The results showed that the stone chip was used in preparing the C30 and C40 concrete by adding the usage of cementitious material, adding the usage of the water reducer, and adjusting the ratio of water to cementitious material and the fine aggregate percent of total aggregate.Such concretes were prepared under the condition that the particle larger than 4.75 mm in the stone chip was substituted the stone in part and the particle smaller than 4.75 mm in the stone chip was substituted the river sand in part. The grade of the stone chip had a greater influence on the workability and the strength of concrete, and the favorable grade stone chip should be used in preparing the concrete. The engineering application showes that the economic chip concrete can be made by controlling the quality of concrete during the batching, transporting,handling, and curing.

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蒋雪琴,杨医博,谭世霖,郭文瑛,周启源,王恒昌.高石粉含量石屑全代砂混凝土的研究与应用*[J].水运工程,2011,(06):20-24

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  • Online: May 23,2012
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