Anchored CFRP ropes for flexural capacity recovering of thermally damaged RC one-way slabs

Al-Rousan, Rajai Z.

doi:10.1016/j.aej.2023.06.086

Cited by 11 publications

(1 citation statement)

References 35 publications

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“…Ref. [39] investigated the efficacy of utilizing NSM-CFRP ropes to restore the mechanical performance of heat-damaged RC slabs using both anchored and un-anchored techniques. The slabs, with/without strengthening and damaged-by-heat/retrofitted, showed significant improvement in toughness and load capacity up to 189% and 225%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Repairing of One-Way Solid Slab Exposed to Thermal Shock Using CFRP: Experimental and Analytical Study

Shhabat,

Ashteyat,

Abdel-Jaber

2024

Fibers

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This research was conducted to investigate, experimentally, theoretically, and numerically, the use of CFRP materials for repairing a reinforced concrete one-way solid slab exposed to thermal shock. Nine slabs, measuring 1800 mm in length, 500 mm in width, and 100 mm in depth, were cast. Seven of these slabs underwent thermal shock at a temperature of 600 °C, rapidly cooled by immersion in water for 15 min. Three primary parameters were examined: the type of CFRP (rope, strip, and sheet), spacing (100 and 200 mm), and the number of sheet layers (one and two). The experimental results revealed a significant decrease of approximately 45.4% in the compressive strength of the concrete after exposure to thermal shock. The thermally shocked RC slab showed a reduction in ultimate capacity by 15.4% and 38.5% in stiffness compared to the control slab. The results underscored the efficacy of CFRP materials, with all repair configurations exhibiting a substantial increase in maximum load capacity and stiffness. Capacity enhancement ranged from 23.7% to 53.4%, while stiffness improvement ranged from 27.6% to 57.1%. Notably, all repair configurations effectively minimized the maximum deflection. This reduction in deflection ranged from 5.2% to 26% compared to the control slab. Numerical results demonstrated strong concurrence with experimental results for both capacity and deflection. The enhancement in capacity ranged from 0.7% to 10.4%, while deflection decreased within a range from 0.95% to 14.16% compared to experimental results.

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Section: Introductionmentioning

confidence: 99%

Repairing of One-Way Solid Slab Exposed to Thermal Shock Using CFRP: Experimental and Analytical Study

Shhabat,

Ashteyat,

Abdel-Jaber

2024

Fibers

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Enhancing Flexural Performance of Self-Compacting Concrete Beams Using Fiber-Reinforced Polymer Composites

Rakam,

Sahu

2024

J Build Rehabil

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This paper presents an extensive experimental investigation into the behavior of beams made of reinforced selfcompacting concrete (RSCC). These beams were subjected to strengthening and re-strengthening using various externally bonded sheets made of Carbon Fiber Reinforced Polymer (CFRP) and Glass Fiber Reinforced Polymer (GFRP).The primary aim of this study is to identify an effective wrapping method suitable for RSCC beams that require strengthening and re-strengthening. The experimental program consisted of a control beam and twelve test beams. Among these, six beams (Group-A) were strengthened, and the other six beams (Group-B) were repaired after undergoing 50% preloading using CFRP and GFRP sheets. Three different wrapping con gurations were employed: Type 1 involved a single-layer U wrap, Type 2 utilized one layer at the so t in combination with a single-layer U wrap, and Type 3 entailed a double-layer U wrap with epoxy adhesive. The experimental results revealed that the beam in Group-A, which used the Type 2 wrapping method, demonstrated a remarkable 109% increase in its load-carrying capacity and signi cantly reduced de ections when compared to the performance of the control beam. Furthermore, the observations from the experiments indicated that wrapping techniques involving CFRP and GFRP sheets outperformed the control specimens.This research provides valuable insights into the effectiveness of different wrapping approaches using CFRP and GFRP sheets in improving the exural performance of RSCC beams. These ndings have the potential to enhance the optimization and practical application of such strengthening and repair methods in RSCC structures.

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Experimental investigation and finite element analysis of reinforced concrete beams strengthened by fibre reinforced polymer composite materials : A review

Bin Azuwa,

Bin Mat Yahaya

2024

Alexandria Engineering Journal

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Anchored CFRP ropes for flexural capacity recovering of thermally damaged RC one-way slabs

Cited by 11 publications

References 35 publications

Repairing of One-Way Solid Slab Exposed to Thermal Shock Using CFRP: Experimental and Analytical Study

Repairing of One-Way Solid Slab Exposed to Thermal Shock Using CFRP: Experimental and Analytical Study

Enhancing Flexural Performance of Self-Compacting Concrete Beams Using Fiber-Reinforced Polymer Composites

Experimental investigation and finite element analysis of reinforced concrete beams strengthened by fibre reinforced polymer composite materials : A review

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