Prediction Formula for Absolute Water Consumption of Recycled Coarse Aggregate Concrete

Yuanxin Guo, Qiuyi Li, Qianqian Li, Gongbing Yue

Abstract


In order to ensure the construction performance of recycled concrete, and the influence of recycled coarse aggregate on water consumption of recycled concrete was studied, and used three kinds of recycled coarse aggregate with different quality to prepare recycled concrete with different replacement rate. Study the influence of recycled coarse aggregate quality and replacement rate on the absolute water consumption of recycled coarse aggregate concrete systemically. The experiment is based on the absolute water consumption of ordinary concrete, puts forward the formula for predicting the absolute water consumption of recycled coarse aggregate concrete based on aggregate quality and replacement rate for the first time. And based on the test date, the error of the prediction formula is compared. The results show that there is a good linear relationship between the absolute water consumption and the replacement rate of recycled coarse aggregate concrete. With the improvement of the quality of recycled coarse aggregate, the absolute water consumption is significantly reduced. According to the experimental data, the maximum calculation error of recycled aggregate concrete is -1.97%, which has high accuracy and good applicability.


DOI
10.12783/dtmse/ictim2017/9938

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