EVALUATION OF THE FLOW PUMP AND CONSTANT HEAD TECHNIQUES FOR PERMEABILITY

The paper presents a comparison betwen the constant head and flow pump experimental techniques for evaluating the permeability of soils. The specimens used in both methods were prepared in the laboratory under controlled conditions to ensure repeatable results. A conventional triaxial cell was used to confine the samples, and full saturation of the specimens was ensured by applying a constant level of back pressure. Accurate flow (inflow and outflow) measurements were obtained using precision burettes and a calibrated flow pump with known flow rates. Fine and coarse materials were tested under different conditions, and effects of different variables including void ratio, hydraulic gradient, specimen size and soil type were studied using the two methods. Experimental procedure, equipment and findings are presented.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • AIBAN, S A
  • Znidarcic, D
• Publication Date: 1989-12

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 655-666
• Serial:
  • GEOTECHNIQUE
  • Volume: 39
  • Issue Number: 4
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Hydraulic gradient; Measurement; Measuring instruments; Permeability; Soils; Triaxial shear tests; Void ratios
• Uncontrolled Terms: Constant head; Flow pump
• Old TRIS Terms: Soil permeability
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00490799
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 31 1990 12:00AM