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Bond strength tests on deformed reinforcement in normal weight concrete

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Abstract

The primary aim of the research which is described in this paper was to investigate the effect of lateral pressure on the bond strength of deformed reinforcement set in normal weight concrete. A large number of tests was undertaken in which the main variables affecting bond strength were investigated. These included concrete strength, reinforcing bar diameter, concrete cover, lateral pressure, position of casting and bar spacing. A brief review of the small number of earlier investigations involving lateral pressures is provided. The paper provides details of the test specimens, the test apparatus and procedure, as well as typical results selected from approximately three hundred results. It draws conclusions on the appropriateness of the test method and the effects of the variables on the bond stress ratio and on bond strength.

Résumé

Le but principal de ces recherches était d'étudier l'effet de l'effort tranchant sur l'adhérence des armatures crantées placées dans du béton ordinaire. Un grand nombre d'essais ont été effectués pour étudier les principales variables qui influencent l'adhérence, y compris la résistance du béton, le diamètre des barres de renforcement, l'épaisseur d'enrobage, l'effort tranchant, la mise en place et le positionnement des barres. On résume le petit nombre de recherches antérieures sur ce sujet. L'article décrit les éprouvettes, l'appareillage et les procédures d'essais, ainsi que des résultats types choisis parmi environ 300 résultats d'essais. Il présente des conclusions sur l'applicabilité de la méthode d'essais et les effets des variables sur le rapport contrainte d'adhérence et sur l'adhérence.

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References

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Author information

Authors and Affiliations

  1. School of Construction & Earth Sciences, Oxford Brookes University, OX3 0BP, Oxford, U.K.

    P. R. Walker

  2. Dari Construction, EC1R 3BT, London, U.K.

    M. K. Batayneh

  3. School of Architecture & Engineering, University of Westminster, NW1 5LS, London, U.K.

    P. E. Regan

Authors
  1. P. R. Walker
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  2. M. K. Batayneh
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  3. P. E. Regan
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Additional information

Editorial note Prof. Dr. P. E. Regan is a RILEM Senior Member and a member of the Editorial Group of TC 090-FMA, Fracture Mechanics of concrete-Applications.

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Walker, P.R., Batayneh, M.K. & Regan, P.E. Bond strength tests on deformed reinforcement in normal weight concrete. Mat. Struct. 30, 424–429 (1997). https://doi.org/10.1007/BF02498566

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  • DOI: https://doi.org/10.1007/BF02498566

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