Abstract
Grey Renewal Model Yuanchen Guo, Longfei Cheng, Xue Wang Yuanchen Guo, College of Civil Engineering, Chongqing Three Gorges University; College of Materials Science and Engineering,Chongqing University, email:gyc1982@yahoo.com.cn Abstract Drying shrinkage deformation is one of the most important reasons which causes cracking of concrete materials. Mix design of C30 natural aggregate concrete is used as reference, the experiment of drying shrinkage considering the influence of recycled aggregate replacement ratio was made. Based on the 90d experimental results, the grey renewal model is presented to predict the drying shrinkage of recycled aggregate concrete. The agreement between the prediction and the experimental data indicates that, the method proposed can be used to predict the long-time drying shrinkage of recycled aggregate concrete.
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