Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020

Research Article

Predictive Capability of Existing Confinement Models for FRCM Composites Confined Concrete

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  • @INPROCEEDINGS{10.4108/eai.28-6-2020.2298161,
        author={Majid  Kadhim and Ali  Adheem and Akram  Jawdhari and Mohammed  Altaee},
        title={Predictive Capability of Existing Confinement Models for FRCM Composites Confined Concrete},
        proceedings={Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart Planning, IMDC-SDSP 2020, Cyperspace, 28-30 June 2020},
        publisher={EAI},
        proceedings_a={IMDC-SDSP},
        year={2020},
        month={9},
        keywords={frcm; confinement; concrete; columns; frp; textile reinforced mortar (trm)},
        doi={10.4108/eai.28-6-2020.2298161}
    }
    
  • Majid Kadhim
    Ali Adheem
    Akram Jawdhari
    Mohammed Altaee
    Year: 2020
    Predictive Capability of Existing Confinement Models for FRCM Composites Confined Concrete
    IMDC-SDSP
    EAI
    DOI: 10.4108/eai.28-6-2020.2298161
Majid Kadhim1,*, Ali Adheem2, Akram Jawdhari3, Mohammed Altaee4
  • 1: College of Engineering, University of Babylon, Hilla, Iraq,
  • 2: Kerbala Technical Institute, Al-Furat Al-Awsat Technical University, 56001 Kerbala, Iraq
  • 3: Department of Construction and Projects, University of Babylon, Hilla, Iraq
  • 4: Environmental Research and Studies Center, University of Babylon, Hilla, Iraq.
*Contact email: majid.mohammed@uobabylon.edu.iq

Abstract

Concrete confinement by the means of external fiber reinforced polymer (FRP) jacketing has been proved to be an effective method to increase the compressive strength and ductility, as well as mitigating deterioration due to aging, chemical attacks, overloading, and seismic activity. Concerns about the organic matrices used in FRP resulted in the development of fiber-reinforced cementitious mortar (FRCM) as a cost-effective and sustainable alternative system, used to repair reinforced concrete beams in shear and flexure, or in column confinement. Several theoretical models have been proposed for FRCM confined concrete elements, based on limited laboratory tests. In this study, the predictive capability of four design models has been tested by comparing their predictions for confined concrete compressive strength (fcc) and ultimate axial strain (εcc) with a large experimental database of 137 samples found in the literature. The model developed by Ombres and Mazzuca [6] provided the highest calibrations with test data, although it still needs further improvements to include the effects of key geometric and material variables. Further efforts should be made to improve the performance of the design models and provide an accurate theoretical confinement model for FRCM-wrapped columns, for design and evaluation purposes.