THE CLASSIFICATION OF CHALK FOR EMBANKMENT CONSTRUCTION

The paper describes an investigation of chalk as a freshly placed fill material and the development of a new classification for chalk in relation to its stability during construction. From measurements made on eleven chalk earthworks sites, the onset of unstable conditions in the fill has been related to values of moisture content and degree of crushing. The new classification is based on the prediction of these two parameters and depends on the measurement of saturation moisture content and the "chalk crushing value" (using a newly developed test) of the chalk. The classification includes recommendations on the selection, when necessary, of the methods of earthwork construction which minimise the risk of instability in the freshly placed fill material, while at the same time using a degree of compaction compatible with a satisfactory long term performance of the embankment. (Author/TRRL)

Media Info

  • Features: Figures; Photos; References;
  • Pagination: p. 137-142

Subject/Index Terms

Filing Info

  • Accession Number: 00311721
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-7277-0069-3
  • Report/Paper Numbers: Proceeding
  • Files: ITRD, TRIS
  • Created Date: Nov 19 1980 12:00AM