Mechanical properties of seawater and sea sand concrete-filled FRP tubes in artificial seawater

Y. L. Li; Xiao Lin Zhao; R. K. Singh Raman

doi:10.1016/j.conbuildmat.2018.10.059

Mechanical properties of seawater and sea sand concrete-filled FRP tubes in artificial seawater

Y. L. Li, Xiao Lin Zhao, R. K. Singh Raman

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

100 Citations (Scopus)

Abstract

Application of the hybrid structure system utilizing seawater and sea sand concrete (SWSSC) and fiber reinforced polymer (FRP) is promising as it is resource beneficial as well as FRPs are corrosion resistant. This paper presents an experimental study on the durability of SWSSC-filled glass/carbon/basalt-FRP tubes exposed to artificial seawater (3.5% salt solution) at 40 °C for up to 6 months. The mechanical properties of conditioned and unconditioned plain concrete, FRPs, and concrete-filled FRP tubes (fully filled and double-skin tubes) were measured by means of compressive test and split-disk test. Compressive strength of SWSSC did not degrade after exposure, but an obvious degradation in hoop strength was observed for GFRP and BFRP. Mechanical properties, such as strength and ultimate axial strain of SWSSC-filled FRP tubes were reduced by environmental aging and the major mechanism is the hoop strength deterioration of FRP. Load-axial strain curves and ultimate capacity of SWSSC-filled FRP tubes were predicted by using an existing method with proper modification to account for the environmental effects. The predictions were in good agreement with experimental results. Finally, the environmental factor specified in current guidelines for FRP degradation was assessed using the data obtained in this study.

Original language	English
Pages (from-to)	977-993
Number of pages	17
Journal	Construction and Building Materials
Volume	191
DOIs	https://doi.org/10.1016/j.conbuildmat.2018.10.059
Publication status	Published - 10 Dec 2018
Externally published	Yes

Keywords

Compression test
Concrete-filled FRP tube
Confinement
Fiber reinforced polymer (FRP)
Mechanical properties
Seawater and sea sand concrete (SWSSC)

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction
General Materials Science

More information

10.1016/j.conbuildmat.2018.10.059

Cite this

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title = "Mechanical properties of seawater and sea sand concrete-filled FRP tubes in artificial seawater",

abstract = "Application of the hybrid structure system utilizing seawater and sea sand concrete (SWSSC) and fiber reinforced polymer (FRP) is promising as it is resource beneficial as well as FRPs are corrosion resistant. This paper presents an experimental study on the durability of SWSSC-filled glass/carbon/basalt-FRP tubes exposed to artificial seawater (3.5% salt solution) at 40 °C for up to 6 months. The mechanical properties of conditioned and unconditioned plain concrete, FRPs, and concrete-filled FRP tubes (fully filled and double-skin tubes) were measured by means of compressive test and split-disk test. Compressive strength of SWSSC did not degrade after exposure, but an obvious degradation in hoop strength was observed for GFRP and BFRP. Mechanical properties, such as strength and ultimate axial strain of SWSSC-filled FRP tubes were reduced by environmental aging and the major mechanism is the hoop strength deterioration of FRP. Load-axial strain curves and ultimate capacity of SWSSC-filled FRP tubes were predicted by using an existing method with proper modification to account for the environmental effects. The predictions were in good agreement with experimental results. Finally, the environmental factor specified in current guidelines for FRP degradation was assessed using the data obtained in this study.",

keywords = "Compression test, Concrete-filled FRP tube, Confinement, Fiber reinforced polymer (FRP), Mechanical properties, Seawater and sea sand concrete (SWSSC)",

author = "Li, {Y. L.} and Zhao, {Xiao Lin} and {Singh Raman}, {R. K.}",

note = "Funding Information: The authors wish to acknowledge the financial support provided by the Australian Research Council (ARC) through an ARC Discovery Grant ( DP160100739 ), and CST composites for suppling the FRP tubes. The tests were conducted in the Civil Engineering Laboratory and Mechanical and Aerospace Engineering Laboratory at Monash University. Thanks are also due to Mr. Long Goh, and Mr. Jeff Doddrell for their assistance. We thank Mr. Damian Carr of Bayside City Council for his permission to obtain seawater and sea sand from Brighton Beach in Melbourne. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

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doi = "10.1016/j.conbuildmat.2018.10.059",

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TY - JOUR

T1 - Mechanical properties of seawater and sea sand concrete-filled FRP tubes in artificial seawater

AU - Li, Y. L.

AU - Zhao, Xiao Lin

AU - Singh Raman, R. K.

N1 - Funding Information: The authors wish to acknowledge the financial support provided by the Australian Research Council (ARC) through an ARC Discovery Grant ( DP160100739 ), and CST composites for suppling the FRP tubes. The tests were conducted in the Civil Engineering Laboratory and Mechanical and Aerospace Engineering Laboratory at Monash University. Thanks are also due to Mr. Long Goh, and Mr. Jeff Doddrell for their assistance. We thank Mr. Damian Carr of Bayside City Council for his permission to obtain seawater and sea sand from Brighton Beach in Melbourne. Publisher Copyright: © 2018 Elsevier Ltd

PY - 2018/12/10

Y1 - 2018/12/10

N2 - Application of the hybrid structure system utilizing seawater and sea sand concrete (SWSSC) and fiber reinforced polymer (FRP) is promising as it is resource beneficial as well as FRPs are corrosion resistant. This paper presents an experimental study on the durability of SWSSC-filled glass/carbon/basalt-FRP tubes exposed to artificial seawater (3.5% salt solution) at 40 °C for up to 6 months. The mechanical properties of conditioned and unconditioned plain concrete, FRPs, and concrete-filled FRP tubes (fully filled and double-skin tubes) were measured by means of compressive test and split-disk test. Compressive strength of SWSSC did not degrade after exposure, but an obvious degradation in hoop strength was observed for GFRP and BFRP. Mechanical properties, such as strength and ultimate axial strain of SWSSC-filled FRP tubes were reduced by environmental aging and the major mechanism is the hoop strength deterioration of FRP. Load-axial strain curves and ultimate capacity of SWSSC-filled FRP tubes were predicted by using an existing method with proper modification to account for the environmental effects. The predictions were in good agreement with experimental results. Finally, the environmental factor specified in current guidelines for FRP degradation was assessed using the data obtained in this study.

AB - Application of the hybrid structure system utilizing seawater and sea sand concrete (SWSSC) and fiber reinforced polymer (FRP) is promising as it is resource beneficial as well as FRPs are corrosion resistant. This paper presents an experimental study on the durability of SWSSC-filled glass/carbon/basalt-FRP tubes exposed to artificial seawater (3.5% salt solution) at 40 °C for up to 6 months. The mechanical properties of conditioned and unconditioned plain concrete, FRPs, and concrete-filled FRP tubes (fully filled and double-skin tubes) were measured by means of compressive test and split-disk test. Compressive strength of SWSSC did not degrade after exposure, but an obvious degradation in hoop strength was observed for GFRP and BFRP. Mechanical properties, such as strength and ultimate axial strain of SWSSC-filled FRP tubes were reduced by environmental aging and the major mechanism is the hoop strength deterioration of FRP. Load-axial strain curves and ultimate capacity of SWSSC-filled FRP tubes were predicted by using an existing method with proper modification to account for the environmental effects. The predictions were in good agreement with experimental results. Finally, the environmental factor specified in current guidelines for FRP degradation was assessed using the data obtained in this study.

KW - Compression test

KW - Concrete-filled FRP tube

KW - Confinement

KW - Fiber reinforced polymer (FRP)

KW - Mechanical properties

KW - Seawater and sea sand concrete (SWSSC)

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DO - 10.1016/j.conbuildmat.2018.10.059

M3 - Journal article

AN - SCOPUS:85053804605

SN - 0950-0618

VL - 191

SP - 977

EP - 993

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Mechanical properties of seawater and sea sand concrete-filled FRP tubes in artificial seawater

Abstract

Keywords

ASJC Scopus subject areas

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