Experimental Research on Mechanical Behavior of GFRP Bars under High Temperature

Xiao Lu Wang; Xiao Xiong Zha

doi:10.4028/www.scientific.net/AMM.71-78.3591

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 71-78Experimental Research on Mechanical Behavior of...

Experimental Research on Mechanical Behavior of GFRP Bars under High Temperature

Abstract:

Experimental results on tensile mechanics properties of GFRP bars at high temperatures are present in this paper. Thirty commercially produced GFRP tensile specimens of 8mm diameter were tested at high temperature ranging from 10°Cup to 500°C. Tensile test result indicates that, the ultimate tensile stress has significant reduction at two temperature zones, one is glass transition temperature of epoxy resin (80-120°C), with strength degradation 22%, the second is the soften temperature of glass fibers(about 400°C), the strength decrease drastically with almost linear rate and remained 33% residual strength at 500°C. The elastic modulus remained unchanged until glass transition temperature of epoxy resin, and the modulus declined linearly with the temperature elevating. Stress-strain relationships of GFRP bars exhibit liner performance even at high temperatures.

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Periodical:

Applied Mechanics and Materials (Volumes 71-78)

Pages:

3591-3594

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.71-78.3591

Citation:

Cite this paper

Online since:

July 2011

Authors:

Xiao Lu Wang, Xiao Xiong Zha

Keywords:

Elastic Modulus, Elongation, Failure, Glass Fiber Reinforced Polymer (GFRP), High-Temperature, Tensile Stress

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