Flat aggregate-portland cement paste interfaces, I. Electrical conductivity models
Flat aggregate-portland cement paste interfaces, I. Electrical conductivity models
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DOI：
10.1016/0008-8846(91)90101-m
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发表时间：
1991-07
影响因子：
11.4
通讯作者：
Xie Ping;J. Beaudoin;R. Brousseau
中科院分区：
文献类型：
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作者：
Xie Ping;J. Beaudoin;R. Brousseau
采用电导率法研究了平面骨料、石灰石和硅玻璃与硅酸盐水泥浆之间过渡区的结构特征。利用电导率模型推导出一个实验可得的参数，称为“界面过量电导率”。这一描述为过渡带的构造特征和形成过程提供了新的信息。试验结果表明，无孔骨料与硅酸盐水泥浆体之间的过渡区密度始终小于散体水泥浆体。过渡区的特征与所使用的骨料无关。经过1 ~ 2天的水化作用，过渡区的形成基本完成。
Structural features of the transition zone between flat aggregates, limeston and silica glass, and portland cement paste were studied by means of electrical conductivity methods. A conductivity model was used to derive an experimentally obtainable parameter termed “interfacial excess conductance”. This descriptor yields new information about the structural characteristics and formation process of the transition zone. The experimental results indicate that the transition zone between non-porous aggregates and portland cement paste is always less dense than bulk paste. The feature of the transition zone are independent of the aggregates used. The formation of transition zone is essentially complete after 1 to 2 days of hydration.