NUMERICAL SIMULATION OF 3D SULFATE ION DIFFUSION AND LIQUID PUSH OUT OF THE MATERIAL CAPILLARIES IN CEMENT COMPOSITES

The study of corrosion due to ion aggression on cement composites helps researchers to understand the effects occurring in concrete under external attack from chemically aggressive environments. This article first reviews the 1D and 2D research in this area, including studies by this same author, then describes a 3D modeling of the diffusion of sulfate ions into cement composite and simultaneous effects, such as microcapillary filling and subsequent liquid push out of them. The author offers a numerical algorithm to account for various conditions specified at the interface, as well as the possibility to model separate volume sections as inert fillers. The author includes illustrative cases. Results found for the velocity field of liquid push out of the composite porous structure help to assess how inert filler, located in the volume, would affect convective and diffusive ion transfer.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Corporate Authors:

  Elsevier

  The Boulevard, Langford Lane
  Kidlington, Oxford  United Kingdom  OX5 1GB
• Authors:
  • Gospodinov, P N
• Publication Date: 2005-3

Language

• English

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 520-526
• Serial:
  • Cement and Concrete Research
  • Volume: 35
  • Issue Number: 3
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Case studies; Cement; Concrete; Corrosion; Diffusivity; Fillers (Materials); Ion exchange; Mathematical models; Pore water; Reactions in concrete; Sulfates; Three dimensional flow
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00989008
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 29 2005 12:00AM