A report is presented of investigations into ways of improving the repeatability of frost heave tests. An essential feature of research undertaken in the Civil Engineering Department of the University of Nottingham into methods of prediction of frost susceptibility, with particular reference to poorer quality limestones, was the correlation of various properties of the materials with direct measurements of heave. Modifications were made to the apparatus of the standard test, as specified in the Transport and Road Research Laboratory report LR90, to improve the repeatability of the results so that the true heave could be estimated with acceptable accuracy. The repeatability study and the modifications are described. It is concluded that poor control of the water bath temperatures is a major cause of systematic error in the LR 90 test, and that repeatability can be improved by simple and cheap modifications to the test. Further research and development is required into improving the reproducibility of frost heave testing, and, if a modified test is adopted, redefining the classification criteria and/or test duration. /TRRL/

  • Corporate Authors:

    IPC Building and Contract Journals Limited

    Surrey House, 1 Throwley Way
    Sutton, Surrey SM1 4QQ,   England 
  • Authors:
    • JONES, R H
    • HURT, K G
  • Publication Date: 1975-7-8

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00132246
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Jun 23 1976 12:00AM