THE EFFECT OF PFA ADDITION ON THE PROPERTIES OF GRC

Bending, tensile and impact properties of GRC (glass fibre reinforced concrete) containing nominally 5 wt percent of alkali resistant fibres and up to 50 wt percent replacement of cement by PFA (pulverized fuel ash) have been determined. The composites were kept in three different environments for up to 11 years. The initial strengths of PFA containing GRC'S are lower than that of GRC made from neat OPC due to the cement dilution effect, but the trends in the long-term properties exhibited by these two types of composites are similar. The smallest changes over a period of 10 years are shown by composites kept in relatively dry air whereas wet environments and natural weathering at BRE (Building Research Establishment) have brought about significant decreases in the toughness of the material. For composites containing 40 percent PFA or more than relative changes in bending and tensile strengths after ten years over the initial values are small due to the low initial values of these composites. (Author/TRRL)

  • Availability:
  • Corporate Authors:

    Construction Press

    Longman House, Burnt Mill
    Harlow, Essex CM20 2JE,   England 
  • Authors:
    • SINGH, B
    • Majumdar, A J
  • Publication Date: 1985-2

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Filing Info

  • Accession Number: 00396226
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jan 31 1986 12:00AM