CHEMICAL OSMOSIS IN COMPACTED CLAYEY MATERIAL AND THE PREDICTION OF WATER TRANSPORT

In order to investigate the ability of a compacted clay to act as a semi-permeable membrane an experimental setup was constructed. A flexible wall permeameter was connected with two reservoirs and a clay sample was subjected to chemical potential gradient by filling the reservoirs with solutions of different salt concentrations. For a commercially available bentonite the semi-permeability expressed by the reflection coefficent was investigated, and compared with the model by Marine & Fritz (1983). The values found were significantly lower than predicted. The large difference between prediction and observation may originate from diffusion-osmosis, ie the convection or drag of water due to the diffusion of salt. (A) For the covering abstract see IRRD 898792.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0727726064
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • KEIJZER, TJS
  • KLEINGELD, P J
  • LOCH, JPG
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: p. 199-204
• Serial:
  • ENVIRONMENTAL ENGINEERING. CONTAMINATED GROUND: FATE OF POLLUTANTS AND REMEDIATION. PROC OF CONFERENCE ORGANISED BY THE BRITISH GEOTECHNICAL SOCIETY AND THE CARDIFF SCHOOL OF ENGINEERING, UNIVERSITY OF WALES, HELD CARDIFF, 16-18 SEPT 1997
  • Publisher: Thomas Telford Limited

Subject/Index Terms

• TRT Terms: Clay; Conferences; Electroosmosis; Groundwater; Leaching; Permeability; Pollutants; Soils
• ITRD Terms: 4177: Clay; 8525: Conference; 5785: Electroosmosis; 4383: Ground water; 5276: Leaching; 5921: Permeability; 2431: Pollutant; 4156: Soil
• Subject Areas: Data and Information Technology; Environment; Geotechnology;

Filing Info

• Accession Number: 00752960
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-7277-2606-4
• Files: ITRD
• Created Date: Sep 28 1998 12:00AM