Research on Carbonation Depth Prediction of Recycled Concrete Based on Gray Model

Based on available achievements on carbonation test data,the model of carbonation depth for recycled concrete considering water-binder(m_w/m_b ),cement content,the kinds of mineral admixture was studied by gray model.The results show that gray model can be used to forecast recycled concrete carbonation depth;self-updating gray model is the best for recycled concrete carbonation depth prediction.Carbonation depth gray model prediction can be realized by making same condition carbonization specimen and obtaining carbonation depth measured data,which is practical method for forecasting recycled concrete carbonation depth.