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Mechanical behavior of CFRP confined low strength concretes subjected to simultaneous heating–cooling cycles and sustained loading

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Abstract

This study aims to present the mechanical behavior of carbon fiber reinforced polymers (CFRP) reinforced low strength cylindrical and prism concrete specimens under both heating–cooling cycles and sustained loading. Heating–cooling cycles range from −10 to 50°C and the applied sustained load level is 40% of the ultimate strength of concrete. After 200 heating–cooling cycles and/or sustained load testing, specimens were tested to determine the mechanical behavior under uniaxial compression. The experimental test results show that heating–cooling cycles alone have insignificant effect on the mechanical properties of CFRP-wrapped specimens. However, as for simultaneous exposure of sustained loading and heating–cooling cycles the main difference is on the shape of the stress–strain diagram, in which the bilinear response becomes clear. The other difference is on the ultimate strain, which decreases up to 29 and 15% for cylindrical and prismatic specimens, respectively.

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Acknowledgments

The authors wish to express sincere appreciation to the Scientific and Technological Research Council of Turkey (TUBITAK) (Project No: ICTAG I599) and Middle East Technical University (BAP-08-11-DPT-2002K120510) for financing this research program.

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Authors and Affiliations

  1. Department of Civil Engineering, Yüzüncüyıl University, Van, Turkey

    B. Erdil

  2. Structural Mechanics Laboratory, Department of Civil Engineering, Middle East Technical University, 06531, Ankara, Turkey

    U. Akyuz

  3. Construction Materials Laboratory, Department of Civil Engineering, Middle East Technical University, 06531, Ankara, Turkey

    I. O. Yaman

  4. Department of Civil Engineering, Structural Mechanics Laboratory, Middle East Technical University, 06531, Ankara, Turkey

    B. Erdil

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  1. B. Erdil
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  2. U. Akyuz
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Correspondence to B. Erdil.

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Erdil, B., Akyuz, U. & Yaman, I.O. Mechanical behavior of CFRP confined low strength concretes subjected to simultaneous heating–cooling cycles and sustained loading. Mater Struct 45, 223–233 (2012). https://doi.org/10.1617/s11527-011-9761-6

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  • DOI: https://doi.org/10.1617/s11527-011-9761-6

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