A demonstration organised by PM Insitu Techniques Ltd is reported of in situ testing by means of a self-boring pressuremeter known as a camkometer. Developed at Cambridge University, the camkometer (originally standing for Cambridge k o meter) is described as a self-boring pressuremeter that is inserted into the ground in such a way that minimal disturbance of the ground occurs, so that the test results give virtually undisturbed soil parameters. Insertion of the 80 mm diameter probe, which incorporates the hydraulically rotated cutter head is carried out by a combined, balanced, thrust and cutter action, and a radiographic method has been used to check that ground disturbance is minimal. With the camkometer it is considered possible to measure directly, in situ, several important engineering properties of the soils. It is claimed that all the equipment, including mud circulation pump, hydraulic power pack, battery charging set for the 12V batteries powering the instrumentation can be accommodated on a trailer while the testing equipment can be housed within a land rover. Cost information provided by PM Insitu Techniques Ltd indicates a figure of found300 per day during which it would be expected that, typically, four tests could be made and processed. /TRRL/

  • Availability:
  • Corporate Authors:

    Foundation Publications Limited

    7 Ongar Road
    Brentwood CM15 9AU, Essex,   England 
  • Publication Date: 1979-1

Media Info

  • Features: Photos; References;
  • Pagination: p. 62
  • Serial:
    • Volume: 12
    • Issue Number: 1
    • ISSN: 0017-4653

Subject/Index Terms

Filing Info

  • Accession Number: 00196898
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Sep 29 1979 12:00AM