Properties of High-Strength Concrete Using a High Fly Ash Content

Two series of high strength concrete representing a total of fifteen mixes were investigated with respect to strength, modulus of elasticity, shrinkage and freeze-thaw resistance. A 30% replacement of cement by fly ash was accomplished in both series. Main variables in the mix design were the binder composition and the water/binder ratio which covered a range of 0.28 to 0.40. Workability was better than the workability of similar concretes containing silica fume. The compressive strength achieved at 90 days was classified as grade C45/55 to C80/95 depending on the mix design. The values of Young’s modulus exceeded the values predicted by current standards. The excellent durability was verified in freeze-thaw tests. The investigation proved that replacing up to 30 percent of the cement by fly ash is possible without jeopardizing strength or durability.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 237-254
  • Monograph Title: Seventh International Symposium on the Utilization of High Strength/High-Performance Concrete
  • Serial:
    • Volume: 1 & 2

Subject/Index Terms

Filing Info

  • Accession Number: 01004595
  • Record Type: Publication
  • ISBN: 0870311808
  • Files: TRIS
  • Created Date: Sep 30 2005 11:09AM