Assessment of GFRP bond behaviour for the design of sustainable reinforced seawater concrete structures

Soares, Sérgio Ricardo Reis; Freitas, Nelson; Nepomuceno, Eduarda; Pereira, Ester Liberato; Sena-Cruz, José

doi:10.1016/j.conbuildmat.2019.117277

Cited by 23 publications

(7 citation statements)

References 38 publications

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“…Whilst, magnesium hydroxide (Mg(OH) 2 ) and gypsum (CaSO 4 ·2H 2 O) also bring expansion crystallization pressure to concrete and lead strength loss (Al-Amoudi 2002). Additionally, Sergio et al (2020) assessed the GFRP bond behavior in reinforced seawater concrete and showed that the maximum pullout force and shear strength were slightly lower when tap water was replaced by seawater to mix PC concrete. Therefore, it could be concluded that using seawater as mixing water in PC-based concrete could decrease the bond strength of GFRP.…”

Section: Resultsmentioning

confidence: 99%

A study of the bond behavior of FRP bars in MPC seawater concrete

Sun

Zheng

Zhou

et al. 2020

Advances in Structural Engineering

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Using magnesium potassium phosphate cement (MPC) and fiber-reinforced polymer (FRP) bar to produce reinforced concrete can overcome the durability problems facing conventional steel reinforced PC concrete. In addition, FRP bar reinforced MPC concrete can also mitigate the CO2 emission issues caused by Portland cement (PC) production and the shortage of natural resources such as virgin aggregates and freshwater. This paper, therefore, is aimed at investigating the bond behavior of the FRP bars in MPC seawater concrete. The direct pullout tests were conducted with a steel bar, BFRP bar, and GFRP bar embedded into different concretes. The effects of reinforcing bars, type of concrete and mixing water on the bond behavior of FRP and steel bars were investigated and discussed. The results showed that the MPC concrete increases the bond strength of BFRP and GFRP bars by 51.06% and 24.42%, respectively, compared with that in PC concrete. Using seawater in MPC concrete can enhance the bond strength of GFRP bar by 13.75%. The damage interface of the FRP bar -MPC is more severe than that of PC with a complete rupture of the FRP ribs and peeling-off of the resin compared to that in steel reinforced MPC specimens. Moreover, the bond stress-slip models were developed to describe the bond behavior of MPC-FRP specimen, and the analytical results match well with the experimental data. In conclusion, the FRP bars showed better bond behavior in the MPC seawater concrete than that in the PC counterparts.

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Section: Resultsmentioning

confidence: 99%

A study of the bond behavior of FRP bars in MPC seawater concrete

Sun

Zheng

Zhou

et al. 2020

Advances in Structural Engineering

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“…A lower water-cement ratio was also used in seawater concrete because the salinity of the seawater was found to affect the overall performance of the concrete (Dhondy et al, 2021). In addition, the use of seawater would slightly reduce the slump and spread of cement paste generated in the concrete mixture compared to Da B et al, 2021;Li et al, 2021;Yue C et al, 2021;Dhondy et al, 2020;He X et al,2020;Yin et al, 2020;Parvizi et al, 2020;Chen G et al, 2020;Mansyur & Permana, 2020;Ma H et al, 2020;Gao et al, 2020;Soares et al, 2020;Adnan et al, 2020;Li, L. G., et al, 2019;;Montanari L. et al, 2019;Yu H et al, 2019;Gong W et al, 2019;Madona & Sivakumar, 2019;Jiang et al, 2019;Younis et al, 2019;Tan Y et al, 2018;Younis et al, 2018;Duan et al, 2015) Flexural strength 5 Gao et al, 2020;Parvizi et al, 2020;Jiang et al, 2019;Duan et al, 2015) Splitting tensile strength 4 (Ting M.Z.Y. et al, 2020;Parvizi et al, 2020;Yin et al, 2020;Younis et al, 2018) that of freshwater (Younis et al, 2018).…”

Section: Effect Of Seawater On Concrete Workability and Densitymentioning

confidence: 99%

“…13(Ting M. Z.Y. et al, 2021;Dhondy et al, 2021;Sun et al, 2021;Gao et al, 2020;Parvizi et al, 2020;Ting M. Z. Y et al, 2020;Chen G et al, 2020;Soares et al, 2020;Li, L. G., et al, 2019;Younis et al, 2018;Xiao et al, 2017;Duan et al, 2015) Fig.4 -…”

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A Systematic Literature Review on the Effect of Seawater as A Promising Material on the Physical and Mechanical Performance of Concrete

Waliyo¹,

Noor²

2021

IJSCET

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Concrete is made from freshwater, cement, and aggregate and the only material shared with mankind, flora, and fauna is freshwater. One of the most concerning problems the world has been facing over the last few decades is the rising demand for freshwater due to the increasing global population and depleting source of freshwater by 2050. In Malaysia, the population is expected to rise from 32 million people in 2020 to 40.50 million people in 2050, which would correspondingly increase the demand for domestic houses, industrial areas, and other building construction as well as increase the overall usage of freshwater. The utilisation of seawater has been applied in constructing buildings and infrastructures since the time of the Roman Empire and the structures still survive for more than 2000 years against chemical attacks and underwater wave force. Given that seawater is considered an alternative mixing agent in concrete production, research on seawater-based concrete has continued to gain interest from the scientific community and undergone swift development. Therefore, the aim of this study was to present a systematic literature review on the recent development of concrete with seawater as the mixing agent and its effect on the physical and mechanical performance of the concrete. A four-stage investigation criterion was conducted for the data collection from the Scopus database, which includes the search parameter, identification, screening, and writing. The screening of the literature retrieved 53 articles, which were then classified based on the physical and mechanical properties of the concrete. Based on the review, the use of seawater as a single mixing agent reduced the physical and mechanical performance of the concrete. However, the incorporation of seawater with special chemical admixture, mineral admixture, and reinforcement with certain treatment resulted in a higher performance of the concrete. Finally, the review highlighted the various potential studies that can be performed to investigate the utilisation of seawater in the construction industry while achieving a sustainable solution to preserve the environment.

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“…Reinforced concrete (RC) has long been recognized as a construction material with excellent constructability, economic efficiency, fire resistance, and durability, but it naturally ages over time [1,2]. In addition, the performance and usability of the material slowly deteriorate due to changes in the surrounding environment [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Bond Properties of Glass-Fiber-Reinforced Polymer Hybrid Rebar in Reinforced Concrete with Respect to Bond Length

Kim,

Park

2024

Applied Sciences

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Preventing rebar corrosion in reinforced concrete (RC) structures has been actively researched worldwide. One of the most powerful solutions is the use of fiber-reinforced polymer (FRP) rebars. However, there are limitations in the mechanical design and construction of FRP rebars because their tensile characteristics are extremely different from those of conventional rebars and they have a different modulus of elasticity. FRP rebars are relatively cost-efficient when fabricated with glass fibers, but they are still costly compared to conventional rebars. Therefore, hybrid rebars fabricated by covering conventional rebars with glass FRP (GFRP) materials were developed in this study. GFRP hybrid rebars have increased durability in marine environments while maintaining the same mechanical properties as conventional rebars. As the difference in rebar diameter of the bonded area decreased, the tensile strength of the concrete increased. As a result, pull-out failure or tensile failure caused by the yielding of the rebars occurred in small-diameter rebars. The experimental results showed that the maximum load for the D13 deformed steel bar was 52.2 kN at a bond length of 50 mm and 76.1 kN at 100 mm, while for the D19 deformed steel bar, it was 65.3 kN at 50 mm and 103.7 kN at 100 mm. The bond properties of hybrid GFRB rebars were found to be lower than those of deformed steel bars. These properties were improved greatly by increasing the thickness of the GFRP materials on the surface of the deformed steel bars, highlighting a path toward high-performance, corrosion-resistant concrete.

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Assessment of GFRP bond behaviour for the design of sustainable reinforced seawater concrete structures

Cited by 23 publications

References 38 publications

A study of the bond behavior of FRP bars in MPC seawater concrete

A study of the bond behavior of FRP bars in MPC seawater concrete

A Systematic Literature Review on the Effect of Seawater as A Promising Material on the Physical and Mechanical Performance of Concrete

Bond Properties of Glass-Fiber-Reinforced Polymer Hybrid Rebar in Reinforced Concrete with Respect to Bond Length

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