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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: Compressive Toughness Characterization of Normal and High-Strength Fiber Concrete Reinforced With Steel Spirals
Author(s): G. Campione and S. Mindess
Publication: Special Publication
Appears on pages(s): 141-162
Keywords: compressive toughness; high-strength fiber concrete; steel spirals
Abstract:Steel, polyolefin and carbon fiber reinforced concretes were combined with traditional transverse steel reinforcement in the form of steel spirals. The complete stress-strain relationship and the ductility of the concrete in compression in both the unconfined and confined states was evaluated. The compressive toughness was evaluated both according to the Japanese Standard JSCE-SF5 and according to a new method proposed in the present work. The experimental program consisted of testing concrete cylinders under compression at two different strength levels: Normal (48 Mpa) and high strength (70 Mpa), polyolefin and carbon fibers. These tests were then repeated with different volume percentages Vf (1.5, 2.0 and 3.0) of steel, polyolefin and carbon fibers. These tests were then repeated with different pitches (25 and 50 mm). It was found that by combining fibers and steel spirals it is possible: (1) to obtain a high level of fracture energy dissipation, which could previously be obtained only by using a high volume percentage of spiral steel: and (2) to improve the maximum strain of the concrete, corresponding to the first failure of the spiral steel.
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