Bond behaviour at high temperatures between concrete and CFRP or steel strengthening bars applied according to the embedded through-section (ETS) technique

Azevedo, Adriana S.; Firmo, João P.; Correia, João R.

doi:10.1016/j.cemconcomp.2024.105580

Cement and Concrete Composites

2024

DOI: 10.1016/j.cemconcomp.2024.105580

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Bond behaviour at high temperatures between concrete and CFRP or steel strengthening bars applied according to the embedded through-section (ETS) technique

Adriana S. Azevedo,

João P. Firmo,

João R. Correia

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2024

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Cited by 2 publications

References 27 publications

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Closed-form solution to the debonding of embedded Through-Section FRP bar-to-concrete joints with interfacial defects

Pan,

Wang,

Liu

et al. 2024

Engineering Fracture Mechanics

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Closed-form solution to the debonding of embedded Through-Section FRP bar-to-concrete joints with interfacial defects

Pan,

Wang,

Liu

et al. 2024

Engineering Fracture Mechanics

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Advanced Structural Technologies Implementation in Designing and Constructing RC Elements with C-FRP Bars, Protected Through SHM Assessment

Angeli,

Naoum,

Papadopoulos

et al. 2024

Fibers

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The need to strengthen the existing reinforced concrete (RC) elements is becoming increasingly crucial for modern cities as they strive to develop resilient and sustainable structures and infrastructures. In recent years, various solutions have been proposed to limit the undesirable effects of corrosion in RC elements. While C-FRP has shown promise in corrosion-prone environments, its use in structural applications is limited by cost, bonding, and anchorage challenges with concrete. To address these, the present research investigates the structural performance of RC beams reinforced with C-FRP bars under static loading using Structural Health Monitoring (SHM) with an Electro-Mechanical Impedance (EMI) system employing Lead Zirconate Titanate (PZT) piezoelectric transducers which are applied to detect damage development and enhance the protection of RC elements and overall, RC structures. This study underscores the potential of C-FRP bars for durable tensile reinforcement in RC structures, particularly in hybrid designs that leverage steel for compression strength. The study focuses on critical factors such as stiffness, maximum load capacity, deflection at each loading stage, and the development of crack widths, all analyzed through voltage responses recorded by the PZT sensors. Particular emphasis is placed on the bond conditions and anchorage lengths of the tensile C-FRP bars, exploring how local confinement conditions along the anchorage length influence the overall behavior of the beams.

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Bond behaviour at high temperatures between concrete and CFRP or steel strengthening bars applied according to the embedded through-section (ETS) technique

Cited by 2 publications

References 27 publications

Closed-form solution to the debonding of embedded Through-Section FRP bar-to-concrete joints with interfacial defects

Closed-form solution to the debonding of embedded Through-Section FRP bar-to-concrete joints with interfacial defects

Advanced Structural Technologies Implementation in Designing and Constructing RC Elements with C-FRP Bars, Protected Through SHM Assessment

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