Experimental study of damage evolution in cuboid stirrup-confined concrete

Li, Hongyu, Teng, Jun, Li, Zuohua, Wang, Ying and Zou, Dujian 2015, Experimental study of damage evolution in cuboid stirrup-confined concrete, Materials and structures/materiaux et constructions, vol. Online first, pp. 1-14, doi: 10.1617/s11527-015-0691-6.

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Title Experimental study of damage evolution in cuboid stirrup-confined concrete
Author(s) Li, Hongyu
Teng, Jun
Li, Zuohua
Wang, Ying
Zou, Dujian
Journal name Materials and structures/materiaux et constructions
Volume number Online first
Start page 1
End page 14
Total pages 14
Publisher Springer
Place of publication New York, N.Y.
Publication date 2015
ISSN 1359-5997
Keyword(s) Concrete
Damage evolution
Experimental study
Summary This paper presents an experimental study on cuboid stirrup-confined concrete specimens under uniaxial monotonic loading and cyclic loading. The effects of stirrup volume ratio, stirrup yield strength, and concrete strength on damage evolution of the stirrup-confined concrete were investigated. The experimental results showed that the strength and ductility of concrete are improved by appropriate arrangement of the stirrup confinement. Firstly, with the increase of the stirrup volume ratio, the damage evolution of concrete can be relatively restrained. Secondly, higher stirrup yield strength usually leads to larger confining pressures and slower damage evolution. In contrast, higher concrete strength leads to higher brittleness, which accelerates damage evolution. Based on the experimental data, a plastic strain expression is obtained through curve fitting, and a damage evolution equation for stirrup-confined concrete is proposed by introducing a confinement factor (C). The comparisons results demonstrated that the proposed damage evolution curve can accurately describe the experimental results.
Language eng
DOI 10.1617/s11527-015-0691-6
Field of Research 090506 Structural Engineering
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2015, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30077520

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