A COMPARATIVE STUDY OF SUCTION-INDUCED SEEPAGE CONSOLIDATION VERSUS CENTRIFUGE CONSOLIDATION

It can take many days for preparation of a normally consolidated clay sample by self-weight in the centrifuge. To save centrifuge time, a hydraulic consolidation method of preparation of normally consolidated clay beds, using seepage forces, is often used prior to final consolidation in the centrifuge. Presently, the required hydraulic gradient is usually generated by high-pressure water at the top of the clay bed. This method tends to cause hydraulic fracturing at corners when rectangular containers are used. A simple method of using vacuum suction to induce seepage forces to clay samples is proposed and discussed in this paper. Experience with this method shows practically no incidence of hydraulic fracturing. Comparison of the variation of water content and shear strength with depth of sample prepared by the new method and those prepared exclusively by self-weight consolidation in the centrifuge lends support to the validity and effectiveness of the proposed method.

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  • Find a library where document is available. Order URL: http://worldcat.org/issn/01496115
• Corporate Authors:

  ASTM International

  100 Barr Harbor Drive
  West Conshohocken, PA  United States  19428-2959
• Authors:
  • Robinson, R G
  • Tan, T S
  • Lee, F H
• Publication Date: 2003-3

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 92-101
• Serial:
  • Geotechnical Testing Journal
  • Volume: 26
  • Issue Number: 1
  • Publisher: ASTM International
  • ISSN: 0149-6115
  • EISSN: 1945-7545
  • Serial URL: https://www.astm.org/products-services/standards-and-publications/geotechnical-testing-journal.html

Subject/Index Terms

• TRT Terms: Centrifuges; Clay soils; Geotechnical engineering; Seepage; Shear strength; Soil consolidation test; Soil samplers; Soil suction; Soil tests
• Uncontrolled Terms: Consolidated clays
• Subject Areas: Geotechnology; Highways; Hydraulics and Hydrology; I42: Soil Mechanics;

Filing Info

• Accession Number: 00943740
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 18 2003 12:00AM