Research Article
Application of Drucker-Prager Plasticity Model for Concrete Confined with Fiber Reinforced Cementitious Mortar (FRCM)
@INPROCEEDINGS{10.4108/eai.7-9-2021.2315489, author={Ali Hadi Adheem and Majid M.A. Kadhim and Akram Jawdhari and Mohammed J. Altaee}, title={Application of Drucker-Prager Plasticity Model for Concrete Confined with Fiber Reinforced Cementitious Mortar (FRCM)}, proceedings={Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey}, publisher={EAI}, proceedings_a={IMDC-IST}, year={2022}, month={1}, keywords={frcm confinement columns finite element drucker prager plasticity}, doi={10.4108/eai.7-9-2021.2315489} }- Ali Hadi Adheem
Majid M.A. Kadhim
Akram Jawdhari
Mohammed J. Altaee
Year: 2022
Application of Drucker-Prager Plasticity Model for Concrete Confined with Fiber Reinforced Cementitious Mortar (FRCM)
IMDC-IST
EAI
DOI: 10.4108/eai.7-9-2021.2315489
Abstract
Wrapping concrete columns with fiber reinforced polymer (FRP) jackets can result in a significant increase of compressive strength and ductility, and can mitigate deterioration due to aging, chemical attacks, overloading, and seismic activity. Cementitious mortar has recently been used as a binder for FRP reinforcement, leading to a sustainable and environmental friendly construction, in lieu of synthetic binders (e.g. epoxy) which suffer from a number of drawbacks. The system is termed fiber reinforced cementitious mortar (FRCM) and can be used to repair concrete in shear and flexure, or in columns confinement. In this study, a comprehensive three-dimensional (3D) finite element (FE) model was developed to study the behavior of concrete confined with FRCM jackets. The model incorporated a Drucker-Prager (DP) plasticity law to simulate effects of confinement on concrete core, a composite damage mechanics (CDM) criteria to predict rupture of FRP mesh, and a concrete plasticity model to simulate cracking of the cementitious mortar. The model predictions were compared with test results of 11 FRCM-confined concrete cylinders comprising various dimensions, FRCM layers, and concrete strengths. The model was able to accurately predict the peak compressive strength of confined concrete (f cc), peak axial strain (ε cc), and entire stress-strain curve in addition to the failure mode of each analyzed specimen.
