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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: End Anchorage of High Strength
Steel Reinforcing Bars
Author(s): John A. Hribar and Raymond C. Vasko
Publication: Journal Proceedings
Appears on pages(s): 875-883
Keywords: anchorage (structural ; bars; bond (concrete to reinforcement) ; hooked reinforcement; pulI-out tests; reinforced concrete; reinforcing steels, research.
Abstract:Pullout tests were conducted to evaluate end anchorage for deformed bars with a nominal yield strength of 60,000 psi (4220 kg/cm2) embedded to conditions approximating those in a semi-infinite medium. Three sizes of bars, #4 (1.3 cm diameter), #7 (2.2 cm), and #11 (3.5 cm) and three types of anchors, straight, right angle hook and semicircular hook, were studied. For a given displacement at the loaded end, the average bond stress increases and the bar stress decreases with increase in bar diameter. Furthermore, the effectiveness of an anchor is a direct function of the concrete strength. Average bond stress appears to be the most useful design criterion.
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