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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: Influence of Reinforcement Size and Distribution on Deflections of RC Members
Author(s): M. A. Polak, K. G. Blackwell, and D. T. Killen
Publication: Special Publication
Appears on pages(s): 19-36
Keywords: bond; crack spacing; deflections; reinforcement size; tests
Abstract:The paper presents analysis of results from fourteen full-size tests on reinforced concrete members subject to different ratios of bending and in-plane loads. The tests examined the influence of bond between concrete and reinforcement on the deflections and cracking of the members. The parameters in the test program included reinforcing bar diameter, ratio of in-plane to bending loadings, reinforcement ratio and concrete cover. Two types of specimens were involved: one set with a larger number but smaller diameter bars, and one with a smaller number but larger diameter bars. Since reinforcement sized varied, the bond characteristics of these bars varied, leading to different load-deflection responses. The test results showed that different longitudinal reinforcement configurations, for the same reinforcement ratio and the same loading and boundary conditions, result in different cracking loads, post-cracking stiffness and deflections.
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