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Maximum usable strain of FRP-confined concrete cylinders

Conference Paper


Abstract


  • This study investigates the maximum usable strain and 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 un-conservative for FRP-confined concrete. The residual strength of the column cores

    is equal to the ordinate of the intersection between the unload curve and the unconfined concrete curve.

    The maximum usable strain of FRP-confined concrete is not a constant. It depends on the unconfined

    concrete strength and the jacket stiffness.

Publication Date


  • 2014

Citation


  • Hadi, M. N. S. & Pham, T. M. (2014). Maximum usable strain of FRP-confined concrete cylinders. In S. T. Smith (Eds.), 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23) (pp. 453-458). Lismore, Australia: Southern Cross University.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3777

Start Page


  • 453

End Page


  • 458

Place Of Publication


  • http://scu.edu.au/acmsm23/

Abstract


  • This study investigates the maximum usable strain and 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 un-conservative for FRP-confined concrete. The residual strength of the column cores

    is equal to the ordinate of the intersection between the unload curve and the unconfined concrete curve.

    The maximum usable strain of FRP-confined concrete is not a constant. It depends on the unconfined

    concrete strength and the jacket stiffness.

Publication Date


  • 2014

Citation


  • Hadi, M. N. S. & Pham, T. M. (2014). Maximum usable strain of FRP-confined concrete cylinders. In S. T. Smith (Eds.), 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23) (pp. 453-458). Lismore, Australia: Southern Cross University.

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3777

Start Page


  • 453

End Page


  • 458

Place Of Publication


  • http://scu.edu.au/acmsm23/