THE INFLUENCE OF SOIL SUCTION ON THE RESILIENT MODULUS OF EXPANSIVE SOIL SUBGRADES

Mechanistic pavement design requires knowledge of the behaviour of subgrades under cyclic loading. The resilient modulus of an expansive clay subgrade depends on both stress state and environmental moisture changes. Repeated loading triaxial tests were performed to investigate this relationship. Undisturbed and remoulded samples were taken from carpark pavements which had been in service for more than ten years. In this paper, empirical relationships are presented and a preliminary predictive model is developed, which use soil suction rather than moisture content to quantify the soil moisture state. The soil stress state and shear strength are also incorporated in the model. (A) For the covering abstract see IRRD 881647.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9054105836
• Corporate Authors:

  AA Balkema

  P.O. Box 1675
  Rotterdam,   Netherlands  BR-3000
• Authors:
  • PHILLIP, A W
  • Cameron, D A
• Conference:
  • PROCEEDINGS OF THE FIRST INTERNATIONAL CONFERENCE ON UNSATURATED SOILS/UNSAT '95/PARIS/FRANCE/6-8 SEPTEMBER 1995. VOLUME 1
• Publication Date: 1995

Language

• English

Media Info

• Features: References;
• Pagination: p. 171-6

Subject/Index Terms

• TRT Terms: Clay; Conferences; Moisture content; Repeated loads; Soil suction; Soils; Subgrade (Pavements); Swelling soils
• ITRD Terms: 4177: Clay; 8525: Conference; 5920: Moisture content; 5588: Repetitive loading; 4156: Soil; 2950: Subgrade; 5771: Suction; 5203: Swelling (soil)
• Subject Areas: Data and Information Technology; Geotechnology; Highways;

Filing Info

• Accession Number: 00729084
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 90-5410-583-6
• Files: ITRD
• Created Date: Dec 12 1996 12:00AM