采用无接触电阻测量方法,通过电阻率随水化时间的关系曲线,研究了粉煤灰水泥中加入NaOH和Na2SO4后净浆水化早期电阻率的变化规律.结果显示,加入粉煤灰后,使早期电阻率明显增加,后期电阻率降低.加入碱后,水化初期电阻率减低,后期电阻率增加.通过不同水化时间电阻率的变化曲线可以研究粉煤灰的持碱效应,并研究碱在粉煤灰水泥中的作用和形成的产物.
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