Anomalous diffusion in unsaturated flow: Fact or fiction?

被引：112

作者：

Hall, Christopher ^{[1
]}

机构：

[1] Univ Edinburgh, Sch Engn & Elect, Edinburgh EH9 3JL, Midlothian, Scotland

[2] Univ Edinburgh, Ctr Mat Sci & Engn, Edinburgh EH9 3JL, Midlothian, Scotland

来源：

CEMENT AND CONCRETE RESEARCH | 2007年 / 37卷 / 03期

关键词：

diffusion; permeability; transport properties;

D O I：

10.1016/j.cemconres.2006.10.004

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The standard model of unsaturated flow widely used in building materials is essentially the extended Darcy law and the Richards equation of soil physics and hydrology. Much of the evidence for its validity comes from the measurement of water absorption (imbibition) kinetics and the analysis of water content distributions. While this model clearly captures the essential features of unsaturated water transport in some materials, several anomalies are known. In cement-based materials, strong deviations are sometimes observed. These are reviewed and assessed in relation to the wider interest in anomalous diffusion phenomena. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：378 / 385

页数：8

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