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Maximum usable strain of FRP-confined concrete

Journal Article


Abstract


  • This study investigates the progressive failure of FRP-confined concrete. Ten FRP-confined concrete specimens were divided into two groups with different jacket stiffness. One specimen in each group was tested until failure while the others were loaded to target strains and then unloaded in order to monitor the residual strength of the concrete cores. At 1% axial strain of FRP-confined concrete, the residual strength of the concrete cores were reduced more than 56% compared to the reference specimens. Experimental results have shown that the maximum usable strain of 1% is unconservative for FRP-confined concrete. A model is proposed to estimate the residual strength of concrete cores. Predictions from the proposed model fit the experimental results well. In addition, a new procedure is proposed to determine the maximum usable strain of FRP-confined concrete based on the maximum usable strain of unconfined concrete.

UOW Authors


  •   Pham, Thong m. (external author)
  •   Hadi, Muhammad
  •   Tran, Tung M. (external author)

Publication Date


  • 2015

Citation


  • Pham, T. M., Hadi, M. N. S. & Tran, T. M. (2015). Maximum usable strain of FRP-confined concrete. Construction and Building Materials, 83 119-127.

Scopus Eid


  • 2-s2.0-84924891261

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3559

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 119

End Page


  • 127

Volume


  • 83

Place Of Publication


  • Netherlands

Abstract


  • This study investigates the progressive failure of FRP-confined concrete. Ten FRP-confined concrete specimens were divided into two groups with different jacket stiffness. One specimen in each group was tested until failure while the others were loaded to target strains and then unloaded in order to monitor the residual strength of the concrete cores. At 1% axial strain of FRP-confined concrete, the residual strength of the concrete cores were reduced more than 56% compared to the reference specimens. Experimental results have shown that the maximum usable strain of 1% is unconservative for FRP-confined concrete. A model is proposed to estimate the residual strength of concrete cores. Predictions from the proposed model fit the experimental results well. In addition, a new procedure is proposed to determine the maximum usable strain of FRP-confined concrete based on the maximum usable strain of unconfined concrete.

UOW Authors


  •   Pham, Thong m. (external author)
  •   Hadi, Muhammad
  •   Tran, Tung M. (external author)

Publication Date


  • 2015

Citation


  • Pham, T. M., Hadi, M. N. S. & Tran, T. M. (2015). Maximum usable strain of FRP-confined concrete. Construction and Building Materials, 83 119-127.

Scopus Eid


  • 2-s2.0-84924891261

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3559

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 119

End Page


  • 127

Volume


  • 83

Place Of Publication


  • Netherlands