Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 339, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2022.127687
Keywords
Epoxy coating; GFRP; Composites; Hygrothermal; Particulate fillers
Categories
Funding
- Advance Queensland Industry Research Fellowship Program [AQIRF 119-2019RD2]
- Australia-Germany Joint Research Cooperation Scheme [57559113]
- Natural Science and Engineering Research Council (NSERC) of Canada, Wagners CFT (Too-woomba, Australia)
- ATL Composites Pty Ltd (Gold Coast, Australia)
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The application of glass fiber-reinforced polymer (GFRP) composites in civil engineering and construction has become increasingly popular. A comparative study was conducted to evaluate the effects of a simulated hygrothermal environment on the durability of GFRP composites and found that the use of a particulate-filled polymer-epoxy coating can effectively minimize the negative impact on the material properties.
The application of glass fiber-reinforced polymer (GFRP) composites in civil engineering and construction has gained significant interest in the last decade. Such applications require information on the long-term performance and durability of fiber composite materials because these materials are directly exposed to aggressive environments. This comparative study evaluated the effect of a simulated hygrothermal environment on the durability of GFRP composite laminates with and without a particulate-filled epoxy coating. The three-point bending test was conducted to characterize the degradation of interlaminar shear strength and flexural properties of GFRP composites before and after conditioning at combined high moisture and temperature for 0, 1000, 2000, or 3000 h. Dynamic mechanical analysis was also conducted to characterize the changes in the thermomechanical properties of the composite laminates. The results show that hygrothermal conditioning had a negative impact on the flexural and interlaminar shear strength of uncoated GFRP laminates, but this could be efficiently minimized with the use of a particulate-filled polymer-epoxy coating.
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