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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: Serviceability and Ultimate Load Behavior of Concrete Beams Reinforced with Basalt Fiber-Reinforced Polymer Bars
Author(s): Thilan Ovitigala, Mustapha A. Ibrahim, and Mohsen A. Issa
Publication: Structural Journal
Appears on pages(s): 757-768
Keywords: basalt; beam; deflection; fiber-reinforced polymers (FRPs); flexure; reinforcement; serviceability
Abstract:The flexural properties of eight 200 x 300 mm (8 x 12 in.) concrete beams reinforced with basalt fiber-reinforced polymer (BFRP) reinforcing bars were investigated. The beams were reinforced with four different sizes of BFRP (10, 13, 16, and 25 mm). The flexural reinforcement ratios ρf ranged from 1.43 to 10.70 times the balanced ratio ρfb. The beams were divided into three categories with low, moderate, and high ρf. As expected, all the beams failed by crushing of the concrete in the top compression fiber. Higher ρf/ρfb, to some extent, has a better effect on reducing the deflection than increasing the beam’s ultimate strength. The strain compatibility equation per ACI 440.1R-06 was conservative in predicting the ultimate flexural strain in the BFRP bars and the ultimate moment capacity. The effective moment of inertia (Ie) prediction model recommended by ACI 440.1R was the least conservative among other models when compared with the experimental Ie.
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