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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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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: Effect of steel fibres on the tensile behaviour of self-consolidating reinforced concrete blocks
Author(s): Romildo Dias Toledo Filho; Ederli Marangon; Flávio de Andrade Silva; Barzin Mobasher
Publication: Special Publication
Appears on pages(s): 123-130
Keywords: Steel fibres, concrete, tensile behaviour, structural tests.
Abstract:This paper reports the recent findings of an experimental investigation on the influence of steel fibres in RC blocks under quasi static direct tensile loading. Structural blocks were
designed with rebar reinforcement ratios of 0.40, 0.63 and 1.00%. A structural direct tensile testing system was developed at the COPPE laboratories resulting in a state-of-the-art in
house apparatus. The RC blocks were reinforced with 1.25% volume fraction of steel fibres and without any type of fibre reinforcement and then tested until a strain level of
approximately 0.0015mm/mm. The results show that the steel fibres improved the stress transfer efficiency between the rebars and the concrete matrix. By partially replacing the
rebars by steel fibres the ductility of the concrete block was augmented and the post-crack stiffness increased. These results and possible mechanisms are discussed on the basis of the
observed crack patterns, deformation measured on the steel rebars, computed deformation of the concrete matrix and on the overall mechanical behaviour of the composite concrete block.
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