A MODEL OF UNSATURATED CLAY STRUCTURE AND ITS APPLICATION TO SWELL BEHAVIOUR

An unsaturated clay soil is considered to exist as A conglomerate of packets of soil particles, with the packets completely saturated, and inter-packet voids filled with air. This concept has allowed prediction of aspects of swell behaviour, and has indicated interrelationships between the variables moisture content, suction, external load and void ratio. The model is discussed, and the relative importance of physico-chemical and capillary tension forces examined. Results of tests on several soils show that the concept has general application. (a). For the covering abstract of the conference, see IRRD abstract no. 218081. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/869610732
• Corporate Authors:

  South African Institute of Civil Engineers

  2 Hollard Street
  Johannesburg,   South Africa 
• Authors:
  • Pells, P
  • Robertson, A
  • BRACKLEY, IJA
• Publication Date: 1975

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 9 p.

Subject/Index Terms

• TRT Terms: Capillarity; Clay; Clay soils; Conferences; General surface features of the earth; Geomorphology; Loads; Mathematical models; Moisture content; Percent saturation; Physicochemical properties; Porosity; Soil particles; Soil suction; Swelling; Unsaturated soils; Void ratios
• Uncontrolled Terms: Models
• Old TRIS Terms: Capillary phenomena; Swell
• ITRD Terms: 4177: Clay; 8525: Conference; 5907: Degree of saturation (mater); 5567: Load; 5920: Moisture content; 5938: Porosity; 4076: Structure (geomorphol); 5771: Suction; 5203: Swelling (soil)
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00134342
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 86961 0732
• Report/Paper Numbers: Conf Paper
• Files: ITRD, TRIS
• Created Date: Sep 16 1976 12:00AM