Postfire Performance of GFRP Stay-in-Place Formwork for Concrete Bridge Decks

Nicoletta, Benjamin; Woods, Joshua E.; Gales, John; Fam, Amir

doi:10.1061/(asce)cc.1943-5614.0000941

Cited by 10 publications

(8 citation statements)

References 27 publications

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“…Step2: Calculate the forces, by making a first guess that the concrete strain reaches its max. limit (0.003) Write all the forces as shown in equaƟons (5)(6)(7)(8)(9)(10)(11)(12)(13)(14), taking all the strains relaƟve to the assumed concrete strain (0.003)…”

Section: Effect Of Strengthening Strategies On the Enhancement Of The...mentioning

confidence: 99%

“…The CFRP governs the failure of the beam RewriƟng the force equaƟons (5)(6)(7)(8)(9)(10)(11)(12)(13)(14) by relaƟng all the strains to the strain in the CFRP. Then find the value of 'x' by iteraƟons that saƟsfy…”

Section: Check Ifmentioning

confidence: 99%

“…Moreover, at a temperature over (300-400 C), the epoxy resin decomposes and vaporizes, releasing toxic vapors, and combustible volatiles that affect the environment and limit the range of vision. [6][7][8][9] To avoid the stated problems, this research proposed a new strengthening technique. An ultrahigh-performance concrete (UHPC) jacket covers the CFRP laminates to protect them from elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Strategies for strengthening of corroded reinforced concrete beams using CFRP laminates and UHPC jacketing

Al‐Osta

Kharma

Ahmad

et al. 2022

Structural Concrete

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This article aims to investigate the flexural behavior of strengthened corroded reinforced concrete (RC) beams using carbon fiber‐reinforced polymer (CFRP) laminates and using a hybrid system of CFRP laminates and ultrahigh‐performance concrete (UHPC) layers. A total of 15 RC beam specimens were prepared, out of which one specimen was uncorroded–unstrengthened, and 14 specimens were corroded using accelerated corrosion set up to cause a significant reduction in the load‐carrying capacity of the RC beams. The damaged covers of the corroded RC beam specimens were first repaired and then strengthened with different strengthening strategies involving CFRP laminates alone as well as the CFRP laminates and UHPC jacketing together. The experimental results obtained by testing the strengthened RC beam specimens in flexure showed a significant enhancement in the load‐carrying capacity and stiffness of the strengthened corroded RC beams. The number of CFRP laminates, hybridization of the CFRP laminates and UHPC layer, and the thickness of the UHPC layer all significantly improved the load‐carrying capacity and stiffness of the strengthened corroded RC beams indicating the possibility of selecting an optimal strategy out of different options for strengthening the corroded beams to achieve a targeted degree of the efficacy of the strengthening. The analytical model developed in this study to estimate the flexural capacity of the strengthened RC beams was found to predict the values of the load‐bearing capacity of the RC beams strengthened using different strategies very close to their respective experimental values.

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Section: Effect Of Strengthening Strategies On the Enhancement Of The...mentioning

confidence: 99%

Section: Check Ifmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strategies for strengthening of corroded reinforced concrete beams using CFRP laminates and UHPC jacketing

Al‐Osta

Kharma

Ahmad

et al. 2022

Structural Concrete

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“…Advances in Materials Science and Engineering damage [35]. e fire damage was insufficient to reduce the ultimate load or change the failure mode of the deck.…”

Section: Experimental Testing and Validationmentioning

confidence: 99%

A State‐of‐the‐Art Review on Hybrid GFRP‐Concrete Bridge Deck Systems

Zuo

Cao

Zhou

et al. 2021

Advances in Materials Science and Engineering

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The state-of-the-art review of hybrid GFRP-concrete systems for bridge decks is presented in this study. Previous research on the experimental work, analytical modeling, and field application on hybrid GFRP-concrete deck systems are presented, along with a variety of deck systems are discussed. Then, seven typical types of connection technology between FRP and concrete are introduced and compared. Besides, the current progress on the performance of shear connections via beam tests, pushout tests, and pullout tests are probed, respectively. Finally, general conclusions are made, identifying the need for future research.

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“…Beneberu et al [59,60] Nicoletta et al [61] investigated the fire performance of glass fiber-reinforced polymer (GFRP) stay-in-place structural precast used in the rapid construction of reinforced concrete (RC) bridge decks. A concrete deck strengthened with a GFRP stay-in-place form is evaluated in seven beam sections.…”

Section: Experimental Methodsmentioning

confidence: 99%

Prediction of Bridge Fires Characteristics Using Machine Learning

Mehrpour¹

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Bridges are an essential component of transportation systems for traffic passage across natural or man-made obstacles. Modern urban trends and growing travel patterns have resulted in a rise in the number of bridges on motorways to avoid road conflict. A major fire might cause irreversible structural deterioration or perhaps the bridge's failure. This research studies the critical factors of bridge fire incidents using a comprehensive database containing 171 bridges. Using an Artificial Neural Network (ANN) model, the vulnerability of bridges in fire is estimated, and the extent of damage is determined based on several key factors including bridge proximity to urban, suburban, or rural areas, structural system, construction materials, annual average daily traffic (AADT), ignition source, combustible types, position of the fires, and the fire-caused damage level. The influence of each parameter on the bridge fires damage levels is investigated. Suggesting measures to reduce the risk of damage, damage levels of fire incidents in different bridges for different scenarios is predicted and a comprehensive and accurate model for definition of vulnerability of bridges under fires is proposed. The outcome of this research will help predict the risk of fire in bridges with various characteristics and the level of damage.

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Postfire Performance of GFRP Stay-in-Place Formwork for Concrete Bridge Decks

Cited by 10 publications

References 27 publications

Strategies for strengthening of corroded reinforced concrete beams using CFRP laminates and UHPC jacketing

Strategies for strengthening of corroded reinforced concrete beams using CFRP laminates and UHPC jacketing

A State‐of‐the‐Art Review on Hybrid GFRP‐Concrete Bridge Deck Systems

Prediction of Bridge Fires Characteristics Using Machine Learning

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