EFFECT OF PRESSUREMETER COMPLIANCE ON MEASUREMENT OF SHEAR MODULUS . PRESSUREMETERS. PROCEEDINGS OF THE THIRD INTERNATIONAL SYMPOSIUM, ORGANISED BY THE BRITISH GEOTECHNICAL SOCIETY, OXFORD UNIVERSITY, APRIL 2-6, 1990

The self-boring pressuremeter is potentially capable of providing a direct measurement of shear modulus, and unloading-reloading loops are frequently carried in a pressuremeter test out for this purpose. In stiff soils, the amount of strain which occurs during an unloading-reloading loop is very small. Hence, inaccuracies in the strain-measuring system can result in large errors. The paper describes a source of error in the strain-measuring system of a Camkometer, and illustrates that though this error appears to be very small, it is of major significance when attempting to measure the unload-reload shear modulus of stiff soils. The methods used for calibrating the instrument to check for this source of error are described, and it is suggested that such methods should become standard for all pressuremeters. The paper also describes the improvements made to the system to eliminate this source of error. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0727715569
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • Fahey, M
  • JEWELL, R J
• Publication Date: 1990

Media Info

• Features: References;
• Pagination: p. 115-124
• Serial:
  • Publication of: Telford (Thomas) Limited
  • Publisher: Thomas Telford Limited

Subject/Index Terms

• TRT Terms: Calibration; Compliance; Conferences; Measurement; Pressure gages; Shear modulus; Soil tests; Strain (Mechanics)
• Old TRIS Terms: Strains
• ITRD Terms: 6171: Calibration; 6410: Coefficient; 8525: Conference; 6440: Error; 6136: Measurement; 6128: Pressiometer; 5531: Shear; 5755: Soil mechanics
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00619869
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-7277-1556-9
• Files: ITRD, TRIS
• Created Date: Mar 31 1992 12:00AM