The effects of aging in seawater and SWSSC and strain rate on the tensile performance of GFRP/BFRP composites: A critical review

Li, Sheng; Guo, Shuaicheng; Yao, Yiming; Jin, Zuquan; Shi, Caijun; Zhu, Deju

doi:10.1016/j.conbuildmat.2021.122534

Cited by 66 publications

(36 citation statements)

References 129 publications

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“…There is another interesting review report by Li et al [34] on effect of alkaline sea water (pH at 12-13) for pre-stressed FRP laminate and FRP tendons. The alkaline sea water simulates the property of the sea water sea sand concrete (SWSSC), which is now very much used in civil construction of marine static structures such as off-shore platforms.…”

Section: Epoxy Thermoset-based Frp For Marine Applicationmentioning

confidence: 99%

FRP for Marine Application

Chakraborty¹

2022

Fiber-Reinforced Plastics

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Fiber Reinforced Plastics (FRPs) are widely used in marine sector owing to their high specific strength and resistance to marine corrosion. For naval application, additional advantages are transparency to radar wave and better vibration damping than metals. The use of various FRPs in off-shore structures and marine vessels needs analysis of desired properties considering the types of matrices and fiber. The common consideration is effect of sea water on the properties of the FRP. This chapter gives a brief on use of different FRPs in various areas such as off-shore pillars, Reinforced Cement Concrete (RCC) enclosers, primary and secondary marine components. A brief discussion is included here on diffusion models and estimation of durability by a time-temperature superposition principle applied to water ingress and corresponding change in mechanical strength of FRPs with examples. The effect of microbial activity on the damage of FRP is not very much reported in literature. It is known that sulfate-reducing bacteria (SRB) are the most damaging microbes for FRP. In conclusion, it is highlighted that vinyl-ester-based FRPs using glass and carbon fibers are best for marine application. To determine the realistic service life in marine environment, Vinyl Ester- FRP (VE-FRP) are to be simultaneously studied for damage due to sea water and the microbes such SRB.

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Section: Epoxy Thermoset-based Frp For Marine Applicationmentioning

confidence: 99%

FRP for Marine Application

Chakraborty¹

2022

Fiber-Reinforced Plastics

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“…In recent years, using seawater and sea-sand instead of freshwater and river sand to prepare seawater sea-sand concrete (SWSSC) has captured the attention of a wide range of researchers (Dong et al, 2018; Li et al, 2021; Zhang et al, 2020b). The utilizations of local marine resources (i.e., sea-sand and seawater) not only effectively protect the river ecosystem, but also avoid detrimental impacts on project schedules caused by inevitable weather changes or transportation (Dong et al, 2020; Wang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…However, the high chloride content of seawater and sea-sand can induce the corrosion of steel bars inside the concrete. These corrosion products develop an expansion effect that can accelerate the propagation of corrosion-induced cracks, seriously affecting the load-bearing capacity or serviceability degradation of SWSSC pavements or structures (Li et al, 2021; Zhang et al, 2019a). Fiber-reinforced polymer (FRP) bars as a new type of rebars can avoid the aforementioned corrosion issue related to steel rebars, originating from their outstanding properties such as superior corrosion resistance, lightweight, and high tensile strength (Li et al, 2018a; Rolland et al, 2018; Zhang et al, 2020c).…”

Section: Introductionmentioning

confidence: 99%

Utilizing alkali-activated materials as ordinary Portland cement replacement to study the bond performance of fiber-reinforced polymer bars in seawater sea-sand concrete

Cao

Bai

Wang

et al. 2022

Advances in Structural Engineering

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Alkali-activated materials (AAMs) are considered an eco-friendly alternative to ordinary Portland cement (OPC) for mitigating greenhouse-gas emissions and enabling efficient waste recycling. In this paper, an innovative seawater sea-sand concrete (SWSSC), that is, seawater sea-sand alkali-activated concrete (SWSSAAC), was developed using AAMs instead of OPC to explore the application of marine resources and to improve the durability of conventional SWSSC structures. Then, three types of fiber-reinforced polymer (FRP) bars, that is, basalt-FRP, glass-FRP, and carbon-FRP bars, were selected to investigate their bond behavior with SWSSAAC at different alkaline dosages (3%, 4%, and 6% Na2O contents). The experimental results manifested that the utilization of the alkali-activated binders can increase the splitting tensile strength ( ft) of the concrete due to the denser microstructures of AAMs than OPC pastes. This improved characteristic was helpful in enhancing the bond performance of FRP bars, especially the slope of bond-slip curves in the ascending section (i.e., bond stiffness). Approximately three times enhancement in terms of the initial bond rigidity was achieved with SWSSAAC compared to SWSSC at the same concrete strength. Furthermore, compared with the BFRP and GFRP bars, the specimens reinforced with the CFRP bars experienced higher bond strength and bond rigidity due to their relatively high tensile strength and elastic modulus. Additionally, significant improvements in initial bond stiffness and bond strength were also observed as the alkaline contents (i.e., concrete strength) of the SWSSAAC were aggrandized, demonstrating the integration of the FRP bars and SWSSAAC is achievable, which contributes to an innovative channel for the development of SWSSC pavements or structures.

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“…High-tensile fiber stiffeners, such as carbon, glass, aramid, and basalt, are integrated into polymeric arrays and made in different shapes such as rods, grids, and tubes [3]. The characteristics of lightweight, high strength, acceptable fatigue resistance, and superior corrosion resistance also make FRP composites a major source of use as construction material or reinforcement in civil engineering [14][15][16]. FRP composite materials showed poorer elasticity and lowered bonding with concrete compared to traditional steel reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Structural Concrete Frames with Hybrid Reinforcement under Cyclic Loading

Sobhy

Nour

Hassan

et al. 2021

Frattura Ed Integrità Strutturale

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A substantial amount of work was carried out on the use of fiber-reinforced polymer (FRP) in reinforcing concrete structural elements, which demonstrated considerable inelasticity or deformity through monotonous and fatigue loads. Even so, the action of FRP bars in FRP-RC columns and frame structures has not yet been studied during reversed cyclic loading. In this research, reversed cyclic loading was conducted on three beam-column joint models using the finite element method with ANSYS software. The first model was for a joint designed with steel rebar for both the longitudinal reinforcement and stirrups. Glass fiber reinforced polymer (GFRP) rebar was used to reinforced the second joint model for both longitudinal reinforcement and steel stirrups, and the third joint model was designed with hybrid steel/GFRP reinforcement for the longitudinal reinforcement and steel stirrups. The performance of the three models under reversed cyclic loading, such as load vs. story drift and energy dissipation capacity, were compared. The GFRP-reinforced model displayed a predominantly elastic activity up to failure. Although its energy dissipation was weak, its performance in terms of total storey drift demand was satisfactory.

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The effects of aging in seawater and SWSSC and strain rate on the tensile performance of GFRP/BFRP composites: A critical review

Cited by 66 publications

References 129 publications

FRP for Marine Application

FRP for Marine Application

Utilizing alkali-activated materials as ordinary Portland cement replacement to study the bond performance of fiber-reinforced polymer bars in seawater sea-sand concrete

Behavior of Structural Concrete Frames with Hybrid Reinforcement under Cyclic Loading

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