THE USE OF BEAMS WITH A SINGLE EDGE NOTCH TO STUDY THE SULPHATE RESISTANCE OF OPC AND OPC/PFA PASTES

The diffusion of the sulphate ion into hardened cement paste is relatively slow and a gradient of degradation is observed. The stress distribution at the tip of a notch is sufficiently concentrated for changes in physical properties at the surface of a specimen to be monitored. The use of beams with a single edge notch is described and shown to be more sensitive to sulphate ingress than the conventional expansion test. The earlier indication of sulphate attack from the notched beams highlights the mechanical restraint imposed by the ralatively unaffected core of an expansion prism. The enhanced sulphate resistance of opc/pfa pastes is shown to be strongly dependent upon the degree of curing prior to immersion in sulphate solution. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00249831
• Corporate Authors:

  Cement and Concrete Association

  Wexham Spring
  Slough SL3 6PL, Buckinghamshire,   England 
• Authors:
  • HUGHES, D C
  • Grounds, T
• Publication Date: 1985-6

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 67-74
• Serial:
  • MAGAZINE OF CONCRETE RESEARCH
  • Volume: 37
  • Issue Number: 131
  • Publisher: Thomas Telford Limited
  • ISSN: 0024-9831

Subject/Index Terms

• TRT Terms: Beams; Cement paste; Compression; Concrete; Concrete curing; Deflection; Deformation curve; Immersion tests; Loads; Notch tests; Physical distribution; Strength of materials; Stresses; Sulfate resisting cement; Sulfates; Test procedures; Tests
• Uncontrolled Terms: Concrete beams; Immersion
• ITRD Terms: 3472: Beam; 5532: Compression; 4702: Curing (concrete); 5586: Deflection; 9016: Distribution (gen); 6213: Immersion test; 5567: Load; 6242: Notch (effect); 5544: Strength (mater); 5575: Stress (in material); 7310: Sulphate; 4747: Sulphate resistant cement; 6255: Test
• Subject Areas: Freight Transportation; Highways; Materials;

Filing Info

• Accession Number: 00452469
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jul 31 1986 12:00AM