Interfacial Zone Percolation in Concrete: Effects of Interfacial Zone Thickness and Aggregate Shape
Interfacial Zone Percolation in Concrete: Effects of Interfacial Zone Thickness and Aggregate Shape
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DOI：
10.1557/proc-370-437
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
D. Bentz;J. Hwang;C. Hagwood;E. Garboczi;K. Snyder;N. Buenfeld;K. Scrivener
中科院分区：
文献类型：
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作者：
D. Bentz;J. Hwang;C. Hagwood;E. Garboczi;K. Snyder;N. Buenfeld;K. Scrivener
以前，开发了一个硬核/软壳计算机模型来模拟砂浆或混凝土中每个骨料周围的界面过渡区的重叠和渗流。骨料颗粒被建模为具有代表真实的砂浆或混凝土试样的尺寸分布的球体。在这里，该模型已被扩展到调查聚集体形状对界面过渡区渗流的影响，通过建模的聚集体作为硬椭球体，这给出了一个动态范围的形状从板到球，纤维。对于高性能混凝土，界面过渡区厚度一般会减小，这也会影响其渗流性能。本文介绍了界面过渡区厚度和骨料形状对这些渗流特性的影响的研究结果。
Previously, a hard core/soft shell computer model was developed to simulate the overlap and percolation of the interfacial transition zones surrounding each aggregate in a mortar or concrete. The aggregate particles were modelled as spheres with a size distribution representative of a real mortar or concrete specimen. Here, the model has been extended to investigate the effects of aggregate shape on interfacial transition zone percolation, by modelling the aggregates as hard ellipsoids, which gives a dynamic range of shapes from plates to spheres, to fibers. For high performance concretes, the interfacial transition zone thickness will generally be reduced, which will also affect their percolation properties. This paper presents results from a study of the effects of interfacial transition zone thickness and aggregate shape on these percolation characteristics.