Journal of Zhejiang University-SCIENCE A

, Volume 7, Issue 8, pp 1296–1304 | Cite as

Experimental study on complete stress-deformation curves of larger-size concrete specimens subjected to uniaxial tension

  • Chen Ping 
  • Liang Zheng-ping 
  • Huang Shu-qin 
  • Chen Yu-quan 
Article
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Abstract

In order to provide parameters for numerical analyses of the huge Three-Gorge concrete dam (2309 m long by 175 m height), complete tensile stress-deformation curves for large-size plain concrete specimens were measured and studied by performing uniaxial tensile tests on large-size unnotched specimens (250 mm × 250 mm × 1400 mm). The specimens were prepared with the three-graded-aggregate materials provided by the client of the Three-Gorge project. To prevent a failure occurring near the ends of the unnotched specimens, both the ends of each specimen (450 mm in length) were cast using a higher-strength concrete than the middle part (i.e., active part). Tensile tests were completed on a specially-designed tensile testing machine, which can be easily re-assembled to accommodate different-size specimens. To make the specimens fail stably, a cyclic loading scheme was adopted after the peak strength was reached. Four of five tests in this study were successful, and four complete tensile stress-deformation curves were obtained. It was found that the post-peak curve of the large-size specimens used in this study is more gradual than those for the small-size specimens reported in the literature.

Key words

Concrete Uniaxial tensiel tests Tensile stress Deformation Large-size specimens 

CLC number

U214.1 

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Copyright information

© Zhejiang University 2006

Authors and Affiliations

  • Chen Ping 
    • 1
  • Liang Zheng-ping 
    • 2
  • Huang Shu-qin 
    • 2
  • Chen Yu-quan 
    • 2
  1. 1.Department of Civil EngineeringZhejiang Sci-tech UniversityHangzhouChina
  2. 2.Department of Civil EngineeringHohai UniversityNanjingChina

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