COMPACTION OF CLAY FILLS IN SITU BY DYNAMIC CONSOLIDATION

Most techniques for compacting clay are based on the fill material being brought to site and placed and rolled in thin layers. There are, however, many sites now being developed in which the fill has already been placed for a number of years and was placed in an uncontrolled manner. The cost of excavating existing fill and re-compacting in thin layers can be prohibitive for deep deposits and compaction of the material in-situ from the surface to provide suitable bearing for structures or roads is most attractive. The methods of compacting the fill in-situ can be divided into two classes, non specialist techniques (e.g. pre compression or surcharging) and specialist techniques. In this paper, experience is drawn from various case histories of projects in Great Britain and France on which the dynamic consolidation process has been used to treat cohesive fills for a variety of purposes. A range of tests have been employed on the various projects and the test results together with settlement readings of completed structures provide useful data for evaluation of the effects of the treatment. The combined compaction of clay fill embankments together with the underlying material by dynamic consolidation from the top of the embankment has been used on the continent but appears to be little known in the UK. The paper presents details of a motorway project in France where compaction was carried out on a clay embankment.(a) (TRRL)

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 197-204

Subject/Index Terms

Filing Info

  • Accession Number: 00311723
  • 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