THE USE OF PLASTIC LATERITIC MATERIAL AS BASES FOR BITUMINOUS SURFACED LOW VOLUME ROADS

A major problem for road engineers is the provision of low volume bituminous surfaced roads at a cost which developing nations can afford. A significant portion, often 20 to 30 percent, of the total cost, is accounted for by the pavement, and it is here that significant savings can be made. Use of lateritic materials, which have plasticities much higher than those usually permitted by current specifications, could result in reduced costs, but their use as base materials has usually resulted in widespread failure. Occasionally, however, the laterites have performed satisfactorily for no apparent reason. The author relates this phenomenon to the powerful suction forces present in laterites during the drying-out process, and states that plastic lateritic materials used as bases generally perform satisfactorily if they are surfaced with asphalt. A great deal of additional field and laboratory research is needed on the subject. (IRF)

  • Supplemental Notes:
    • Presented at the Fourth IRF African Highway Conference, Nairobi, Kenya, January 20-25, 1980. For individual papers see TRIS Accession Numbers 311921 through 311971.
  • Corporate Authors:

    International Road Federation

    525 School Street, SW
    Washington, DC  United States  20024
  • Authors:
    • Erridge, P S
    • GRACE, H
  • Publication Date: 1980

Language

  • French

Media Info

  • Features: Figures; Tables;
  • Pagination: 24 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00311926
  • Record Type: Publication
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Jun 9 1980 12:00AM