EFFECTS OF LOW CALCIUM FLY ASH ON SULFATE RESISTANCE OF OPC CEMENT

Low calcium fly ash is a good pozzolan to improve sulfate resistance of ordinary portland cement (opc). Beneficial effects produced by this pozzolan on opc are studied in the present paper. Results of sulfate resistance evaluated by Koch & Steinegger method are presented for four opc + fly ash cements. The changes in mineralogical composition of mortar are analysed by x-ray diffraction, scanning electron microscopy, and energy dispersive analysis of x-ray (edax). Fly ash addition delays ettringite formation-cracking phenomenon and decreases the acid attack. (TRRL)

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  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Irassar, F
  • Batic, O
• Publication Date: 1989-3

Media Info

• Features: References;
• Pagination: p. 194-202
• Serial:
  • Cement and Concrete Research
  • Volume: 19
  • Issue Number: 2
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Admixtures; Cement; Chemistry; Corrosion; Cracking; Deterioration; Durability; Fly ash; Minerals; Mortar; Porosity; Pozzolan; Prevention; Strength of materials; Structures; Sulfates
• Uncontrolled Terms: Micro
• ITRD Terms: 4736: Admixture; 4758: Cement; 7165: Chemistry; 5252: Corrosion; 5211: Cracking; 5255: Deterioration; 5910: Durability; 4580: Fly ash; 9045: Micro; 4051: Mineral; 4769: Mortar; 5938: Porosity; 4185: Pozzolan; 9149: Prevention; 5544: Strength (mater); 5937: Structure (physicochem); 7310: Sulphate
• Subject Areas: Bridges and other structures; Highways; Materials; Security and Emergencies;

Filing Info

• Accession Number: 00493463
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Apr 30 1990 12:00AM