DISCUSSION OF "A NEW TEST FOR SULFATE RESISTANCE OF CEMENTS" BY P.K. MEHTA AND O.E. GJORV

Attention is called to the Bayliss test for determining the concentration of calcium carbonate and aggressive carbon dioxide in sulphate solution. This test should always be carried out before beginning the test for sulfate resistance of cements to define clearly the medium in which the test is to be carried out (incrusting or non-incrusting). In the case of an incrustating medium, there is an initial period during which the pH of the medium in which the specimens are immersed tends to rise, followed by another in which the pH diminishes and tends towards its initial value; in that case there is no corrosion. If the medium is non-incrustating, the pH tends to rise and never decreases, even if the medium in contact with the test specimens is changed. The pH should never be allowed to rise above 9.

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Coutinho, A S
• Publication Date: 1976-1

Media Info

• Features: References;
• Pagination: p. 40-41
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 4
  • Issue Number: 1
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Calcium carbonate; Carbon dioxide; Cement; Corrosion resistance; pH value; Sulfates; Testing
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00129512
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 10 1976 12:00AM