Analytical Life-Prediction Model for RC Beams Strengthened with Externally Bonded FRP Laminates under Flexural Fatigue Loading

Al-Qaralleh, Mohammad; Toutanji, Houssam

doi:10.1061/(asce)cc.1943-5614.0000892

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…This can be essentially achieved by using either non-intrinsic sensors or intrinsic sensors [2][3][4][5]. If the stresses in the structural element is known, its life expectancy can be easily calculated using the simple beam theory [6]. The non-intrinsic sensors is based on utilizing external sensing devices such as: strain gauges, fiber optic sensors, and piezoelectric sensors [7].…”

Section: Introductionmentioning

confidence: 99%

Electromechanical properties of self-sensing cement pastes polarized while fresh

Al-Qaralleh¹

2023

J Appl Eng Science

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This work investigates the bulk resistivity, and the stress-strain relationship of polarized cement paste as indicators of its electromechanical properties. The polarizing of the cement paste specimens was achieved by applying a uniform direct current (DC) electric field through the fresh cement paste for 24 hours. A total of 24 specimens were prepared for this study, 7 of them were not cured under the effect of the DC electric field to serve as reference. 3 different electrical field values were utilized in this experiment, namely: 100 V.m-1, 200 V.m-1, and 500 V.m-1. 2 types of water were used for mixing the cement paste, namely: tap (T), and deionized (DI). The bulk resistivity values were measured in the direction parallel to the polarization, and the two other directions perpendicular to the polarization. The T water specimens were tested under uniaxial compression on the axis of polarization. The results show that the bulk resistivity of the specimens was increased as the curing electrical field increased. Mixing with T water also increased the bulk resistivity when compared to mixing with DI water. Polarizing the fresh cement paste has a significant effect on its mechanical properties such that the ultimate compressive strength decreased by 50%, and the failure strain increased by 500%. In addition, the polarized specimens showed some changes in its morphology when compared with the reference.

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Section: Introductionmentioning

confidence: 99%

Electromechanical properties of self-sensing cement pastes polarized while fresh

Al-Qaralleh¹

2023

J Appl Eng Science

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“…As reported, FRP materials exhibit excellent fatigue behavior (Kim and Heffernan, 2008; Peng et al, 2016; Siddika et al, 2019), and the failure often initiates from the debonding of FRP materials (Deng et al, 2015; Harries et al, 2006; Wahab et al, 2012) or the fracturing of steel reinforcements (Aidoo et al, 2004; Papakonstantinou et al, 2001). Several models have been proposed to predict the fatigue life of the reinforced concrete (RC) structures strengthened with FRP composites (Aidoo et al, 2004; Al-Qaralleh and Toutanji, 2018) and some studies focused on the post-fatigue behaviors of the FRP-strengthened structures (Sena-Cruz et al, 2012; Song and Hou, 2017). Extensive investigations have been carried out on the fatigue performance of the strengthened structures, mostly focusing on the bonding behaviors or fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the mechanical and self-sensing behaviors of prestressed carbon fiber–reinforced polymer reinforced concrete composite structures

Wang

Yang

Chun-lin

et al. 2020

Advances in Structural Engineering

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A type of self-sensing prestressed carbon fiber–reinforced polymer reinforced concrete composite structure was proposed and studied, composed of reinforced concrete beam, prestressed carbon fiber–reinforced polymer plate, and long-gauge fiber Bragg grating sensors. The carbon fiber–reinforced polymer plate was prestressed and bonded to the bottom of the reinforced concrete beam. Two types of anchorage systems were compared and studied. The long-gauge fiber Bragg grating sensors were used as active elements for the self-sensing of mechanical responses, which were installed on the tensile rebars, carbon fiber–reinforced polymer plates, and concrete. A series of static and fatigue 4-point flexural experiments were carried out to study the bending and fatigue performances of the composite structures. After a prescribed number of fatigue loading cycles, monotonic flexural bending was performed to investigate the deterioration of properties. The results showed that the long-gauge fiber Bragg grating sensor is valid for the mechanical response sensing of the proposed structures. The compatibility of the prestressed carbon fiber–reinforced polymer plate and concrete in the pure bending zone is excellent even under fatigue loading. The load-carrying capacities were improved by more than 30% due to the application of prestressed carbon fiber–reinforced polymer plates. The stiffness was also improved remarkably and generally decreased with the accumulation of fatigue cycles linearly.

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Fatigue-Life Prediction of Composite Laminate Under Flexural Loading

Bezazi

Mahi

Boudjema

et al. 2020

Proceedings of the 4th International Symposium on Materials and Sustainable Development

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Analytical Life-Prediction Model for RC Beams Strengthened with Externally Bonded FRP Laminates under Flexural Fatigue Loading

Cited by 6 publications

References 13 publications

Electromechanical properties of self-sensing cement pastes polarized while fresh

Electromechanical properties of self-sensing cement pastes polarized while fresh

Experimental study on the mechanical and self-sensing behaviors of prestressed carbon fiber–reinforced polymer reinforced concrete composite structures

Fatigue-Life Prediction of Composite Laminate Under Flexural Loading

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