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提出了一种基于三维水泥水化过程计算机模型的水泥基材料液相(孔溶液)离子浓度预测新方法。综合考虑了环境温度、湿度、材料配合比等因素,基于水泥化学和溶液化学理论,采用固-液相动态平衡分析方法,利用三维计算机模型CEMHYD3D来预测水泥浆体中孔溶液、水化产物的数量,通过溶液平衡方法模拟孔溶液中各主要离子浓度的变化规律。模型预测结果与实验结果对比分析表明,该方法可以成功地预测水泥基材料孔溶液组分的变化规律。
A new method for predicting the concentration of liquid (pore solution) ions in cement-based materials based on the computer model of three-dimensional cement hydration process is proposed. Based on the cement chemistry and solution chemistry theory, the solid-liquid dynamic balance analysis method was used, and the three-dimensional computer model CEMHYD3D was used to predict the pore fluid and hydration products in the cement slurry by comprehensively considering factors such as ambient temperature, humidity and material mix ratio Quantity, through the solution balance method to simulate the pore solution of the main ion concentration changes. The comparison of model predictions and experimental results shows that this method can predict the variation of pore composition of cement-based materials successfully.