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| 摘要: |
| 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是变化可经了解水泥水化过程微结构的变化。 |
| 关键词: 水泥 水化 毛细扩散 氯离子 水泥浆体 电化学 |
| DOI： |
| 分类号:TQ172.18 |
| 基金项目: |
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SHI Mei lun CHEN Zhi yuan SUN Jian LIN Jiang
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| Abstract: |
| 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. |
| Key words: AC impedance,capillary diffusion,chloride ion,cement paste |
