水泥水化过程的电化学研究(Ⅰ)——氯离子在硬化水泥浆体中的毛细扩散

Electrochemical Research on the Hydration Process of Cement (Ⅰ) ——Capillary Diffusion of Chloride Ions in Hardened Cement Paste

通过低频下的交流阻抗测量，提供了有效地测量氯离子扩散系数的方法．对毛细扩散的特征进行了探讨，提出根据平行毛细管模型由扩散系数求取等效毛细管半径并据此来描述微结构的方法．根据水泥浆体氯离子扩散系数随时间的变化可以了解水泥水化过程微结构的变化．

Based on AC impedance technique, a new method for determination of diffusion coefficient of chloride ions has been proposed. It has been found that the diffusion coefficient of chloride in hardened cement paste changes with curing period. The nature of capillary diffusion was discussed and the change of microstructure of HCP was also discussed on the basis of the capillary model.