A PROBLEM IN ORGANIC CONTAMINATION OF SAND

CERTAIN SANDS FROM WESTERN AUSTRALIA WHEN USED TO MAKE CONCRETE, RESULTED IN EITHER HIGH AIR ENTRAINMENT IN THE CONCRETE OR PROBLEMS ASSOCIATED WITH BLEEDING. A SERIES OF TESTS WAS DONE TO FIND SUITABLE ADDITIVES WHICH WOULD OFFSET THE UNDESIRABLE EFFECTS OF THE SANDS. THE PROBLEM WAS MINIMIZED BY USING THREE ADDITIVES - TRIBUTYL PHOSPHATE AND A WATER- REDUCING AGENT TO IMPROVE THE COMPRESSIVE STRENGTH BY REDUCING AIR ENTRAINMENT AND WATER REQUIREMENT, AND CALCIUM CHLORIDE TO CHANGE THE BLEEDING CHARACTERISTICS. REFERENCE IS MADE TO A NEW METHOD OF DETECTING ORGANIC MATERIAL PRESENT ON THE SANDS. /TRRL/A/

  • Supplemental Notes:
    • REPORT L15
  • Corporate Authors:

    Commonwealth Scienfific & Industrial Res Org

    Division of Building Research, P.O. Box 56
    Highett, Victoria,   Australia 
  • Authors:
    • Lewis, R K
  • Publication Date: 1971

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 23 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00229506
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Aug 7 1972 12:00AM