NDLI: Flexural ductility of high-strength concrete columns with minimal confinement

Content Provider	Springer Nature Link
Author	Lam, J. Y. K. Ho, J. C. M. Kwan, A. K. H.
Copyright Year	2008
Abstract	The use of high-strength concrete (HSC) instead of normal-strength concrete (NSC) in columns has the advantage of allowing the column size to be reduced and is thus becoming popular. However, since HSC is more brittle than NSC, its use could result in undesirable brittle failure. To evaluate the ductility of columns, nonlinear moment–curvature analysis taking into account the stress-path dependence of the steel reinforcement is required. Based on such analysis, a parametric study has been conducted to investigate the effects of various factors on the ductility of columns. The results revealed that the effect of concrete strength is dependent on the axial stress level (axial load to area ratio) and axial load level (axial load to capacity ratio). At the same axial stress level, the use of HSC has little or basically no adverse effect on the ductility but if the same axial load level is maintained to reduce the column size, the use of HSC would significantly reduce the ductility. Finally, two formulas for direct evaluation of the ductility of columns are developed.
Starting Page	909
Ending Page	921
Page Count	13
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	42
Issue Number	7
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-09-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Columns Flexural ductility High-strength concrete Building Materials Civil Engineering Operating Procedures, Materials Treatment Theoretical and Applied Mechanics Materials Science Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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