硬化水泥砂浆湿度的交流阻抗研究

研究了单频交流阻抗与硬化水泥砂浆湿度的关系．研究表明，交流复阻抗实部及虚部的对数值与硬化水泥砂浆的湿度呈线性关系；采用阻抗测定方法，可以动态确定硬化水泥砂浆的湿度空间分布及其随时间的变化；在干燥空气中，试件拆模后表面湿度迅速下降，其下降速率大大高于水泥砂浆内部湿度的变化．

Study on AC Impedance of Hardened Mortar Humidity

The relationship between AC impedance and hardened mortar humidity was researched. It is shown that the AC impedance is linearly related to humidity. The distribution of mortar humidity and its change with time could be measured by AC impedance technique. It is found that the humidity of the surface of mortar reduces more quickly than that of the inner. It's very important to control the humidity of the concrete to avoid concrete crack.