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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: Bond Strength and Shear Capacity of Prestressed Beams Made of SCC
Author(s): J. Hegger, N. Will, and S. Bülte
Publication: Symposium Paper
Appears on pages(s): 123-138
Keywords: anchorage; bond; pull-out tests; self-consolidating concrete; shear capacity; transfer length; truss model
Abstract:While the characteristics of self-consolidating concrete (SCC) do not affect the bending capacity, there is an influence on the bond strength and shear capacity. The effect on the bond behavior of strands in SCC is a subject of some controversy in current literature. Therefore, pull-out tests and full-scale tests on the transfer length have been performed to describe the bond capacity of SCC with gradual release of prestress. It is shown that the bond behavior depends on the concrete mixture. The bond capacity of SCC containing limestone powder is comparable to conventional vibrated concrete while the bond capacity of SCC with fly ash is reduced by approximately 20%. The shear capacity of prestressed beams has been determined by tests with different shear reinforcement ratios. The tests revealed that SCC does not significantly influence the shear capacity although the smaller aggregates and the higher content of cement paste reduce the crack-friction capacity.
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