Anomalous Diffusion in Unsaturated Flow: Fact or Fiction?

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 measurement of water absorption (imbibition) kinetics and 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.

• Record URL:
  • https://doi.org/10.1016/j.cemconres.2006.10.004
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier
• Authors:
  • Hall, Christopher
• Publication Date: 2007-3

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 378-385
• Serial:
  • Cement and Concrete Research
  • Volume: 37
  • Issue Number: 3
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Cement; Concrete construction; Microstructure; Permeability; Structural materials
• Uncontrolled Terms: Anomalous diffusion; Unsaturated flow; Water absorption
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 01046631
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 25 2007 1:46PM