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

Sun, Wei; Zheng, Yu; Zhou, Linzhu; Song, Junfeng; Bai, Yun

doi:10.1177/1369433220956816

Cited by 11 publications

(6 citation statements)

References 27 publications

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“…Such material properties of FRP are also highly suitable for new concretes made from seawater and sea sand (e.g. Bazli et al, 2021;Dong et al, 2021;Huang et al, 2021;Li et al, 2021b;Sun et al, 2021a;Xin et al, 2021). The traditional technique of FRP strengthening is externally bonding the FRP sheets/plates onto the surface of RC members (e.g.…”

Section: Introductionmentioning

confidence: 99%

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

Jedrzejko

Zhang

Yan

et al. 2022

Advances in Structural Engineering

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Near-surface mounted (NSM) fiber-reinforced polymer (FRP) technique is known as a promising alternative to the externally bonded (EB) FRP technique for strengthening reinforced concrete (RC) members, on account of its many advantages such as high bond efficiency with concrete and good durability. Shear strengthening of RC beams by near-surface mounting the FRP bars/strips into the concrete cover on beam sides is one of the most prevalent applications of NSM FRP. Abundant experimental studies have been conducted to investigate the behaviour of NSM FRP shear strengthened beams, and many strength models for predicting the contribution of NSM FRPs to the shear capacity of the beam have been proposed. The present paper presents a comprehensive review of these strength models, in which all the models collected from the existing literature are first classified into three categories based on their used approach and then summarized and discussed. This paper not only aims to bring a deep understanding of the existing strength models for NSM FRP shear strengthened RC beams, but also provides a background and basis for the assessment of these models by using the newly-generated experimental database in the companion paper.

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Section: Introductionmentioning

confidence: 99%

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

Jedrzejko

Zhang

Yan

et al. 2022

Advances in Structural Engineering

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“…Z et al, 2018;Shang. B et al, 2018;Xiao et al, 2017;Duan et al, 2015) Air content 6 (Li et al, 2021;Sun et al, 2021;Ting M. Z. Y. et al, 2020;Montanari et al, 2019;Younis et al, 2018;Duan et al, 2015)…”

Section: Synthesis Of Resultsunclassified

“…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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“…In addition, through the comparison of curing time, it is also concluded that the tensile strength of the FRP anchor under 4‐day curing is 6% lower than that under 4‐week curing. Sun 28 and Soares et al 29 studied the effect of seawater on the mechanical properties of grout. The former replaces traditional cement by preparing potassium magnesium phosphate cement.…”

Section: Introductionmentioning

confidence: 99%

Study on the anchoring performance and failure mechanism of basalt/glass hybrid fiber reinforced plastic anchors in coupled environment

Ren,

Wang,

et al. 2023

Polymer Composites

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To investigate the real anchorage performance of basalt and glass hybrid fiber reinforced plastic (FRP) anchors in external corrosive environments. In this paper, a combination of experimental studies and finite element analysis was used. By carrying out pull‐out tests of basalt and glass hybrid FRP anchors under the synergistic effect of freeze–thaw cycles and alkaline environment, the effects of factors such as hole diameter, anchorage length, and mortar strength on their anchorage performance and durability were investigated. Critical corrosion time was introduced to determine the degree of corrosion of the anchor rods. After that, it combined with numerical simulation to reveal the degradation mechanism of the anchorage performance of hybrid anchors. The results showed that the best anchorage performance of basalt/glass hybrid FRP anchors was achieved when the hole diameter was 24 mm, the anchorage length was 175 mm, and the mortar strength was 45.5 MPa. The ultimate pull‐out load was up to 122.16 kN. When the time did not exceed the critical corrosion time, the ultimate load‐carrying capacity of basalt and glass hybrid FRP anchors increased by 9.3% compared to the uncorroded environment. Beyond the critical corrosion time, the ultimate load‐carrying capacity was reduced by 23.3% and the anchorage performance was degraded. In addition, the contact interface between the anchor and the mortar is the weak area of the anchoring structure, which should be focused on in the later design of the actual project.Highlights Basalt/glass hybrid FRP anchors have good corrosion resistance. The anchoring performance of hybrid FRP anchors under the coupled environment is studied. Hole diameter and anchoring length have more influence on the anchor performance. The concept of critical corrosion time is put forward. The failure mechanism and coupling environment influence are revealed by FES.

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

Cited by 11 publications

References 27 publications

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

Shear strengthening of RC beams with NSM FRP. I: Review of strength models

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

Study on the anchoring performance and failure mechanism of basalt/glass hybrid fiber reinforced plastic anchors in coupled environment

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