A NEW TECHNIQUE TO CONTROL COMPACTION OF BITUMEN-SAND MIXES ON THE ROAD USING A VANE SHEAR APPARATUS

The problem of deciding in the field when a cutback bitumen-sand mixture has reached an optimum condition for compaction is discussed. The development and application of a vane shear test for the control of field conditions for optimum compaction of bitumen-sand mixtures is described. Details of the apparatus are given, and its use both as a laboratory tool and in the measurement of in situ strengths after compaction is described. It is shown that higher values of shear strength result when the initial liquid content after mixing is greater than the optimum value for maximum density, and also that the highest stability can be obtained by compacting at a particular value of the fluid content after aeration. The different types of soil stabilization processes using bitumen binders which are in use are briefly discussed. /Author/

  • Supplemental Notes:
    • Reprinted from Transactions of the S.A. Institution of Civil Engineers, Volume 8, No. 3, March 1966, pp 87-94.
  • Corporate Authors:

    South African Council for Scientific & Indus Res

    P.O. Box 395
    Pretoria, Transvaal,   South Africa 
  • Authors:
    • Marais, C P
  • Publication Date: 1966-3

Media Info

  • Features: Appendices; Figures; Photos; References;
  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00263617
  • Record Type: Publication
  • Report/Paper Numbers: No. RR 74
  • Files: TRIS
  • Created Date: Jan 9 1975 12:00AM