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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: Shear Capacity of Beams Made of High-Performance Concrete
Author(s): J. Hegger, A. Sherif, and S. Gortz
Publication: Special Publication
Appears on pages(s): 723-740
Keywords: aggregate interlock; design model; high-performanceconcrete; shear
Abstract:The shear capacity of stirrup-reinforced concrete elements consists generally of a portion modeled by a truss Vtruss and an exceeding concrete contribution Vc. Recent research results assign a portion of the concrete contribution to the effect of aggregate interlock. After shear cracking, a relative displacement of the crack edges occurs activating friction forces upon the rough crack edges with increasing load. In such a model the concrete contribution is considered solely by a more flat strut inclination , and accordingly a truss model can describe the whole shear-capacity. In addition, the shear behavior of high strength concrete is different than ordinary concrete, presumable due to the different shear transfer mechanisms across the shear cracks. However, the experimental and theoretical investigations conducted show that the truss model only describes a part of the whole shear capacity. There is an exceeding remaining load-bearing system. Based on the research results a design model for shear is developed which is applicable for high performance as well as ordinary concrete.
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