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

Language

• English

Media Info

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

Subject/Index Terms

• TRT Terms: Additives; Bleeding; Chlorides; Concrete; Contaminants; Organic compounds; Phosphates; Sand
• Subject Areas: Geotechnology; Highways;

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