A review is made of the developments which have taken place over the last two decades in those aspects of earthworks design and practice which affect pavement performance. The dramatic increase in size of earthmoving plant and hence of earthworks in highway construction has required an examination of earthworks stability, settlement and trafficability. Potential problems in these areas are being solved by improved methods of analysis, an increased range of construction techniques and materials, better appreciation of in situ soil behaviour, and the ability to monitor performance by field instrumentation. Better understanding of material behaviour has also led to the inclusion of hard and soft rocks, waste products and wet materials in embankment. In conventional design methods, overall pavement thickness is sensitive to subgrade condition as measured by the California bearing ratio (CBR). New techniques for subgrade improvement are examined and methods which have been developed for predicting the equilibrium conditions under a completed pavement and for measuring CBR at these conditions are discussed. /Author/TRRL/

  • Availability:
  • Corporate Authors:

    Applied Science Publishers Limited

    22 Rippleside Commercial Estate, Ripple Road
    Barking, Essex,   England 
  • Authors:
    • HIGHT, D W
    • Green, P A
  • Publication Date: 1978

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00195013
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 11 1979 12:00AM