CALIBRATION AND ITS EFFECT ON THE RESULTS OF PRESSUREMETER TESTS IN WEAK ROCKS . FIELD TESTING IN ENGINEERING GEOLOGY. PROCEEDINGS OF THE TWENTY-FOURTH ANNUAL CONFERENCE OF THE ENGINEERING GROUP OF THE GEOLOGICAL SOCIETY, SUNDERLAND POLYTECHNIC, SEPTEMBER 4-8 1988

The paper describes in situ testing recently carried out in Keuper Marl using the Hughes high-pressure dilatometer for which an extensive study into calibration and its effects on results was made. The various calibrations performed are described (calibration of the pressure transducer and strain arms, and of the membrane initial ageing, lift-off, resistance and compression), followed by discussion of the effects of calibration corrections on the results obtained. The findings illustrate the importance of proper calibrations both before and during a pressuremeter testing programme. In particular, the significance of membrane compression calibrations when testing mudstones classified as weak to moderately weak or stronger is highlighted. For the covering abstract of the conference see IRRD 832042.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0903317516
• Corporate Authors:

  GEOLOGICAL SOCIETY PUBLISHING HOUSE

  UNIT 7, BRASSMILL ENTERPRISE CENTRE, BRASSMILL LANE
  BATH,   United Kingdom  BA1 3JN
• Authors:
  • Curtis, D C
  • Ansell, P
  • Leach, B A
• Publication Date: 1990

Language

• English

Media Info

• Pagination: p. 77-83
• Serial:
  • Publication of: GEOLOGICAL SOCIETY PUBLISHING HOUSE
  • Publisher: GEOLOGICAL SOCIETY PUBLISHING HOUSE

Subject/Index Terms

• TRT Terms: Calibration; Conferences; Marl; Measuring instruments; Rock mechanics; Swelling soils
• Subject Areas: Data and Information Technology; Geotechnology;

Filing Info

• Accession Number: 00607150
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-903317-51-6
• Files: ITRD, TRIS
• Created Date: Mar 31 1991 12:00AM