水化早期水泥净浆电导的特征及与凝结时间相关性的研究

Investigation of electrical conductivity on cement paste during early hydration and relativity between electrical conductivity and setting time

通过测定硅酸盐类水泥净浆在水化早期的电导,获知各样品净浆的电导变化均有共同的特点,笔者将水泥净浆电导在水化早期的变化划分为五个阶段,各阶段均能用水化机理或仪器特点进行解释.实验结果表明,水泥净浆电导在水化早期的极值点LK对应的时间TLK与净浆的初、终凝时间存在良好的相关性.

Investigation of electrical conductivity on cement paste indicated： different sample showed the same tendency on conductivity development during early hydration. The conductivity curve of cement paste can be divided into 5 sections, and each of those can be explained by corresponding hydration mechanism or equipment characteristics. The results show that： the time （TLK） of characteristic position LK on conductivity curve provided satisfied correlations between paste initial as well as finial setting time.