Probabilistic modelling of saturated/unsaturated hydraulic conductivity for compacted glacial tills

A probabilistic model including some previous probabilistic studies is proposed to evaluate hydraulic conductivity from pore entrance size distribution. The model considers multi-pores in series of paths through capillary networks in the soil fabric. The average number of connected pores is a representative value of the fabric, greater than two but not too large. The hydraulic conductivity of three glacial tills from northern Quebec with different grain-size distributions has been examined by horizontal permeability tests in saturated conditions, and suction tests with vertical permeability measurement in unsaturated conditions. The hydraulic conductivity is strongly influenced by compaction conditions corresponding to different microfabrics. The model is applicable not only in saturated conditions but also in unsaturated conditions with different microfabrics. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Authors:
  • WATABE, Y
  • LEBIHAN, J -
  • LEROUEIL, S
• Publication Date: 2006-5

Language

• English

Media Info

• Pagination: 273-84
• Serial:
  • Geotechnique
  • Volume: 56
  • Issue Number: 4
  • Publisher: Thomas Telford Limited
  • ISSN: 00168505

Subject/Index Terms

• TRT Terms: Compaction; Evaluation; Permeability; Scale models; Soil suction; Soils; Tests
• ITRD Terms: 3686: Compaction; 9020: Evaluation (assessment); 6205: Model (not math); 5921: Permeability; 4156: Soil; 5771: Suction; 6255: Test
• Subject Areas: Bridges and other structures; Geotechnology; I42: Soil Mechanics;

Filing Info

• Accession Number: 01027305
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Jul 5 2006 12:31PM