基于Extended Freundlich函数的水泥恒温水化动力学模型  

Dynamics model for hydration of cement curing under isothermal condition based on Extended Freundlich

作　　者：李占印[1] 董继红[2] 

机构地区：[1]盐城工学院土木工程学院,江苏盐城224003 [2]盐城工学院化学与生物工程学院,江苏盐城224003

出　　处：《四川建筑科学研究》2013年第1期186-189,共4页Sichuan Building Science

摘　　要：首先通过化学反应动力学原理推导出水泥恒温水化反应速率方程,得出利用水泥水化度α表达的水化反应速率方程;然后联合运用两种试验方法测定水泥恒温(20℃±1℃)养护水化的累计水化反应热,进而推导计算出水化反应速率随水化程度的变化曲线。最后,根据曲线的发展变化规律选择合适的函数拟合计算,从而提出吻合度较高的Extended Freundlich模型,并计算出Extended Freundlich模型与测试结果的相关系数r高达0.98682,得出Extended Freundlich模型比较适合评价水泥恒温水化动力学方程(反应速率的变化规律)。A hydration rate equation for cement curing under isothermal condition was inferred firstly through the principle of chemical reaction dynamics in this article. Hydration kinetic equations for cement were represented by the degree of hydration. Then accumulated heat of hydration of cement curing under 20 ＋ 1 ℃ condition was tested by union two test methods. Curve of hydration rate based on hydration degree was deduced. According to the development of the curve,the appropriate fitting function was selected. As a result,the model of Extended Freundlich was advanced. Correlation coefficient between test results and the model of Extended Freundlich up to 0.98682. So the model of Extended Freundlich is more suitable for the dynamics equation of hydration of cement curing under isothermal condition （ changing law for the rate of hydration）.

关 键 词：反应动力学 反应速率 水化热 拟合函数 EXTENDED FREUNDLICH模型 

分 类 号：TQ172.7[化学工程—水泥工业]