DRY COMPACTION

The dry compaction of sand and gravel is of particular significance in regions of arid and hot climatic conditions where water is expensive to supply. Laboratory apparatus described developed by Dynapac for compaction by vibration, consists of a 150 mm diameter test cylinder with a vibrating tamper. Tests were carried out on sand samples - completely dry, with water content between dry and saturated, and, completely saturated. Results showed that highest density was achieved with dry compaction. The results have been confirmed with full-scale tests using Dynapac self-propelled vibrating rollers on highway projects in hot and arid conditions. The most effective dry compaction has been shown with water content not exceeding 1.5% although satisfactory results can sometimes be achieved with a water content of 3-4%. Dry compaction of sand is influenced by the presence of active fine-grained material that binds the sand particles, as well as the presence of salts which result in a higher density being obtained. (TRRL)

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  • Corporate Authors:

    Morgan-Grampian (Professional Press) Limited

    Morgan-Grampian House, Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Forsblad, L
  • Publication Date: 1980-9

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Filing Info

  • Accession Number: 00324980
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: May 21 1981 12:00AM