The compression properties of clays are normally examined by means of oedometer tests. The usual procedure is that the load is applied step-by-step and that the load increment, in each step is equal to the load applied earlier. The duration of each load increment is twenty-four hours. This type of test is called conventional 24-hours test in this report. The method was introduced in 1926 by Karl Terzaghi and has for a long time been the normal way of examining the compression properties of fine grained soils. Tests carried out in this way take a lot of time, normally at least one working week. This results in an unrational use of oedometers and a long waiting time unless a large number of oedometers are at hand which demands big investments and large laboratory areas. Another way of carrying out oedometer tests is the so called rapid tests. The principle for these tests is to increase the load as fast as the primary consolidation has been completed. Such tests can be carried out in a considerable shorter time than the 24-hours tests. The purpose of this report is to compare rapid tests with 24-hours tests carried out by step-by-step load application and with the load increment ratio = 1. /Author/

  • Corporate Authors:

    Swedish Geotechnical Institute

    S-581 01 Linkoping 1,   Sweden 
  • Authors:
    • Karlsson, R
    • Viberg, L
  • Publication Date: 1978


  • Swedish

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 46 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00177273
  • Record Type: Publication
  • Report/Paper Numbers: Report No. 5
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM