Bond performance between FRP tubes and seawater sea sand concrete after exposure to seawater condition

Milad Bazli; Xiao Ling Zhao; R. K. Singh Raman; Yu Bai; Saad Al-Saadi

doi:10.1016/j.conbuildmat.2020.120342

Bond performance between FRP tubes and seawater sea sand concrete after exposure to seawater condition

Milad Bazli, Xiao Ling Zhao, R. K. Singh Raman, Yu Bai, Saad Al-Saadi

Research output: Journal article publication › Journal article › Academic research › peer-review

53 Citations (Scopus)

Abstract

In this study the durability of the bond between different fibre reinforced polymer (FRP) tubes and seawater sea sand concrete (SWSSC) under seawater condition is investigated. Concrete filled pultruded glass fibre reinforced polymer (GFRP) tubes and filament winding GFRP, carbon fibre reinforced polymer (CFRP) and basalt fibre reinforced polymer (BFRP) tubes were exposed to seawater at 25 °C and 40 °C for 1, 3 and 6 months. Push-out tests were carried out to study the bond performance of concrete filled FRP tubes (CFFT). The bond strength changes compared to the reference samples, in terms of the mechanical and chemical bonds, were calculated. The results showed that for all cases except one condition that had the same value as the reference, the maximum bond strength of the tubes increased due to the conditioning, however, the bond strength at the chemical adhesion breaking moment decreased by the conditioning. In other words, the friction coefficients of the samples increased due to conditioning, while the chemical adhesion decreased. Equations are proposed to predict the bond strength corresponding to slip initiations.

Original language	English
Article number	120342
Journal	Construction and Building Materials
Volume	265
DOIs	https://doi.org/10.1016/j.conbuildmat.2020.120342
Publication status	Published - 30 Dec 2020
Externally published	Yes

Keywords

Bond strength
Chemical bond
Concrete filled FRP tubes
Durability
Seawater
Seawater sea sand concrete

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

More information

10.1016/j.conbuildmat.2020.120342

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title = "Bond performance between FRP tubes and seawater sea sand concrete after exposure to seawater condition",

abstract = "In this study the durability of the bond between different fibre reinforced polymer (FRP) tubes and seawater sea sand concrete (SWSSC) under seawater condition is investigated. Concrete filled pultruded glass fibre reinforced polymer (GFRP) tubes and filament winding GFRP, carbon fibre reinforced polymer (CFRP) and basalt fibre reinforced polymer (BFRP) tubes were exposed to seawater at 25 °C and 40 °C for 1, 3 and 6 months. Push-out tests were carried out to study the bond performance of concrete filled FRP tubes (CFFT). The bond strength changes compared to the reference samples, in terms of the mechanical and chemical bonds, were calculated. The results showed that for all cases except one condition that had the same value as the reference, the maximum bond strength of the tubes increased due to the conditioning, however, the bond strength at the chemical adhesion breaking moment decreased by the conditioning. In other words, the friction coefficients of the samples increased due to conditioning, while the chemical adhesion decreased. Equations are proposed to predict the bond strength corresponding to slip initiations.",

keywords = "Bond strength, Chemical bond, Concrete filled FRP tubes, Durability, Seawater, Seawater sea sand concrete",

author = "Milad Bazli and Zhao, {Xiao Ling} and {Singh Raman}, {R. K.} and Yu Bai and Saad Al-Saadi",

note = "Funding Information: The authors wish to acknowledge the financial support provided by the Australian Research Council (ARC) through an ARC Discovery Grant ( DP160100739 ). The helps and support of Monash University Civil Engineering laboratory technical staff are greatly acknowledged. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

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AU - Bazli, Milad

AU - Zhao, Xiao Ling

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AU - Al-Saadi, Saad

N1 - Funding Information: The authors wish to acknowledge the financial support provided by the Australian Research Council (ARC) through an ARC Discovery Grant ( DP160100739 ). The helps and support of Monash University Civil Engineering laboratory technical staff are greatly acknowledged. Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/12/30

Y1 - 2020/12/30

N2 - In this study the durability of the bond between different fibre reinforced polymer (FRP) tubes and seawater sea sand concrete (SWSSC) under seawater condition is investigated. Concrete filled pultruded glass fibre reinforced polymer (GFRP) tubes and filament winding GFRP, carbon fibre reinforced polymer (CFRP) and basalt fibre reinforced polymer (BFRP) tubes were exposed to seawater at 25 °C and 40 °C for 1, 3 and 6 months. Push-out tests were carried out to study the bond performance of concrete filled FRP tubes (CFFT). The bond strength changes compared to the reference samples, in terms of the mechanical and chemical bonds, were calculated. The results showed that for all cases except one condition that had the same value as the reference, the maximum bond strength of the tubes increased due to the conditioning, however, the bond strength at the chemical adhesion breaking moment decreased by the conditioning. In other words, the friction coefficients of the samples increased due to conditioning, while the chemical adhesion decreased. Equations are proposed to predict the bond strength corresponding to slip initiations.

AB - In this study the durability of the bond between different fibre reinforced polymer (FRP) tubes and seawater sea sand concrete (SWSSC) under seawater condition is investigated. Concrete filled pultruded glass fibre reinforced polymer (GFRP) tubes and filament winding GFRP, carbon fibre reinforced polymer (CFRP) and basalt fibre reinforced polymer (BFRP) tubes were exposed to seawater at 25 °C and 40 °C for 1, 3 and 6 months. Push-out tests were carried out to study the bond performance of concrete filled FRP tubes (CFFT). The bond strength changes compared to the reference samples, in terms of the mechanical and chemical bonds, were calculated. The results showed that for all cases except one condition that had the same value as the reference, the maximum bond strength of the tubes increased due to the conditioning, however, the bond strength at the chemical adhesion breaking moment decreased by the conditioning. In other words, the friction coefficients of the samples increased due to conditioning, while the chemical adhesion decreased. Equations are proposed to predict the bond strength corresponding to slip initiations.

KW - Bond strength

KW - Chemical bond

KW - Concrete filled FRP tubes

KW - Durability

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KW - Seawater sea sand concrete

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Bond performance between FRP tubes and seawater sea sand concrete after exposure to seawater condition

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Keywords

ASJC Scopus subject areas

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