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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Properties of High-Strength Concrete Using a High Fly Ash Content
Author(s): K.-Ch. Thienel, A. Kustermann, J. Junggunst, and R.K. Zimebelmann
Publication: Special Publication
Appears on pages(s): 237-254
Keywords: compressive strength; durability; fly ash; freeze-thaw resistance; high-strength concrete (HSC); shrinkage; tensile strength; water/binder-ratio; Young’s modulus
Abstract: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.
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