Effects of concrete grade and steel yield strength on flexural ductility of reinforced concrete beams

Kwan, A. K. H., Ho, J. C. M. and Pam, H. J. (2004) Effects of concrete grade and steel yield strength on flexural ductility of reinforced concrete beams. Australian Journal of Structural Engineering, 5 2: 1-20. doi:10.1080/13287982.2004.11464932


Author Kwan, A. K. H.
Ho, J. C. M.
Pam, H. J.
Title Effects of concrete grade and steel yield strength on flexural ductility of reinforced concrete beams
Journal name Australian Journal of Structural Engineering   Check publisher's open access policy
ISSN 1328-7982
22004-2261
Publication date 2004-02-04
Sub-type Article (original research)
DOI 10.1080/13287982.2004.11464932
Open Access Status Not yet assessed
Volume 5
Issue 2
Start page 1
End page 20
Total pages 20
Place of publication Melbourne, VIC Australia
Publisher Taylor & Francis Australasia
Language eng
Abstract A previously established theoretical equation correlating the flexural ductility of a reinforced concrete beam section to the steel ratios and the concrete strength has been extended to account for the effects of the tension and compression steel yield strengths by means of a parametric study. Through the study, it was revealed that at a fixed degree of the beam section being under-or over-reinforced, the flexural ductility decreases slightly with the tension steel yield strength as well as the concrete strength but increases slightly with the compression steel yield strength. From charts plotting the flexural strength and flexural ductility that could be simultaneously achieved by a beam section, it was evident that the use of a higher concrete strength could increase either the flexural strength or the flexural ductility or both. On the other hand, at a given flexural strength, a higher tension steel yield strength would lead to lower flexural ductility while a higher compression steel yield strength would lead to higher flexural ductility. Lastly, a simple method of designing beam sections to meet any specified flexural ductility requirement has been proposed.
Keyword Flexural ductility
High-strength concrete
Reinforced concrete beam
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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Created: Mon, 13 Mar 2017, 18:04:10 EST by Johnny Ho on behalf of School of Civil Engineering