This paper was presented at session 15 - pavement materials. It describes some of the research which has been conducted recently by the Transport and Road Research Laboratory (TRRL) into the behaviour of soil-cement and considers the implications for its use in pavement layers. The laboratory studies have concentrated on the volumetric changes in the material and on the effectiveness of curing membranes. Shrinkage in clay-cement mixtures has been shown to be anisotropic. When it is measured in the direction appropriate for estimating the horizontal shrinkage in pavements, shrinkage is inversely proportional to the cement content provided that the material is properly cured. As the cement content is increased up to 15 per cent the shrinkage of horizontally compacted specimens decreases. The effects of the method of compaction, density and pretreatment moisture content on the shrinkage of clay- cement is considered. Curing methods commonly used in the field have been studied under controlled conditions and their effectiveness on three different types of soil-cement (sand-cement, clay-cement and gravel-cement mixtures) has been evaluated. It is apparent that some common methods for curing soil-cement pavement layers are ineffective. (TRRL)

Media Info

  • Features: Figures; Tables;
  • Pagination: p. 49-53
  • Serial:
    • Volume: 9
    • Issue Number: 4

Subject/Index Terms

Filing Info

  • Accession Number: 00307982
  • Record Type: Publication
  • Source Agency: ARRB Group Ltd.
  • Files: ITRD, TRIS, ATRI
  • Created Date: Jun 9 1980 12:00AM