Minimum flexural ductility design of high-strength concrete beams

Ho, J. C. M., Kwan, A. K. H. and Pam, H. J. (2004) Minimum flexural ductility design of high-strength concrete beams. Magazine of Concrete Research, 56 1: 13-22. doi:10.1680/macr.

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Author Ho, J. C. M.
Kwan, A. K. H.
Pam, H. J.
Title Minimum flexural ductility design of high-strength concrete beams
Journal name Magazine of Concrete Research   Check publisher's open access policy
ISSN 0024-9831
Publication date 2004-02-01
Sub-type Article (original research)
DOI 10.1680/macr.
Open Access Status File (Publisher version)
Volume 56
Issue 1
Start page 13
End page 22
Total pages 10
Place of publication London, United Kingdom
Publisher I C E Publishing
Language eng
Abstract In the flexural design of reinforced concrete beams, apart from the provision of adequate strength, it is also necessary to provide a certain minimum level of ductility. Traditionally, this has been done by limiting the tension steel ratio or the neutral axis depth to no more than certain fixed maximum values. However, this would result in a variable level of curvature ductility depending on the concrete grade and the steel yield strength. Of greater concern is that this would lead to a lower level of curvature ductility than has been provided in the past to beams made of conventional materials when high-strength concrete and/or high-strength steel are used. It is proposed herein that instead of limiting the tension steel ratio and the neutral axis depth, it is better to set a fixed minimum to the curvature ductility factor. The maximum values of tension steel ratio and neutral axis depth corresponding to the proposed minimum curvature ductility factor for various concrete grades and steel yield strengths have been evaluated. Based on these maximum values, simplified guidelines for providing minimum flexural ductility have been developed.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 26 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 24 times in Scopus Article | Citations
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