CHARACTERISATION OF NATAL SANDS FOR USE IN ASPHALTIC MIXTURES

Work on the classification of a sand for use in asphaltic mixtures has been carried out at the National Institute for Transport and Road Research and a sand classification in terms of the dry compaction characteristics, particle shape, gradation and filler content has been proposed in an earlier report. In view of the shortage of good quality sands in areas of high demand, many of the poorer quality sands can be utilised by adjustment of mix proportions according to the physical characteristics of the sand. This report outlines an investigation in which eight sands were sampled from sand pits in Natal and tested for their suitability in premix in terms of the new classification system. The test results are discussed and methods are proposed for upgrading the lower quality sands. The emphasis has been placed on the development of simple methods that will enable the utilisation of locally available sands, many of which may have been previously regarded as unsuitable. /Author/

• Corporate Authors:

  National Institute for Transport & Rd Res, S Afr

  P.O. Box 395
  Pretoria, Transvaal,   South Africa 
• Authors:
  • Acott, S M
• Publication Date: 1976-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 26 p.

Subject/Index Terms

• TRT Terms: Aggregate gradation; Asphalt mixtures; Classification; Compaction; Fillers (Materials); Particles; Sand; Testing
• Old TRIS Terms: Gradation
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00165502
• Record Type: Publication
• Report/Paper Numbers: RB/6/76 Intrm Rpt.
• Files: TRIS
• Created Date: Jan 13 1978 12:00AM