PRACTICAL ASPECTS OF SAND SURFACE DRESSING FOR LOW VOLUME ROADS . 5TH CONFERENCE ON ASPHALT PAVEMENTS FOR SOUTHERN AFRICA (CAPSA 89). PROCEEDINGS HELD IN SWAZILAND, 5-9 JUNE, 1989

A sand surface dressing consisting of two applications of binder and sand can provide a cost effective surface treatment for low volume roads. A good quality clean coarse sand is necessary and can be used either with a penetration bitumen or an emulsion. During construction dust control is essential and moisture contents of the sand require monitoring and suitable adjustments should be made to spread rates. A minimum curing period of 3,5 months is recommended between first and second sprays. The bitumen/sand absorption rates are critically dependent on temperature. The surface finish is sensitive to irregularities in the underlying basecourse. A cost comparison reveals a saving of at least 30% over a conventional 2 coat chip treatment. The sand surface dressing is a relatively straight forward economical operation which can be carried out more rapidly than conventional spray and chip, is quickly opened to traffic and can be repaired simply.(A) For the covering abstract of the conference see IRRD 828827.

  • Availability:
  • Corporate Authors:

    CAPSA

    PO BOX 993
    Manzini,   Swaziland 
  • Authors:
    • Staven, K P
  • Publication Date: 1989

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00604072
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 0-620-14395-9
  • Files: ITRD, TRIS
  • Created Date: Feb 28 1991 12:00AM