Experimental Research on Long-Term Performances of GFRP-Wound Pipes in Environments of Seawater Immersion and UV Radiation

SUO Shanze; LI Rong

doi:10.13204/j.gyjzG22110402

Volume 53 Issue 7

Jul. 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(7): 223-230

SUO Shanze, LI Rong. Experimental Research on Long-Term Performances of GFRP-Wound Pipes in Environments of Seawater Immersion and UV Radiation[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(7): 223-230. doi: 10.13204/j.gyjzG22110402

Citation:

SUO Shanze, LI Rong. Experimental Research on Long-Term Performances of GFRP-Wound Pipes in Environments of Seawater Immersion and UV Radiation[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(7): 223-230. doi: 10.13204/j.gyjzG22110402

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Experimental Research on Long-Term Performances of GFRP-Wound Pipes in Environments of Seawater Immersion and UV Radiation

doi: 10.13204/j.gyjzG22110402

SUO Shanze,
LI Rong^,

Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China

Received Date: 2022-11-04

Abstract

Abstract

The long-term performance of GFRP-wound pipes is an important factor affecting the design and application of GFRP pipes in the marine environment. The durability of GFRP-wound pipes in the condition of seawater immersion, wet-dry condensation cycle and UV radiation with or without UV protective coating was researched. A total of 306 GFRP-wound pipes were experienced accelerated aging in the laboratory for 90 days. The spilt-disk test was conducted after laboratory aging treatment, the influence of different types of exposed environments on the performance of GFRP-wound pipe was obtained. The results showed that:1) in the seawater immersion environment, the circumferential tensile strength of GFRP-wound pipes with different thicknesses decreased to different degrees, but after a long time, the circumferential tensile strength retention ratios of GFRP-wound pipes with different thicknesses tended to be consistent; 2) in the ultraviolet irradiation environment, the circumferential tensile strength of GFRP-wound pipes with thinner thickness decreased significantly; 3) the UV protective coating could make the circumferential tensile strength degradation of GFRP-wound pipes in the ultraviolet irradiation environment slow down, and the protection effect of the thinner the tube was more obvious.
- GFRP-wound pipe,
- durability,
- fiber-reinforced polymer,
- seawater immersion,
- UV radiation,
- protective coating

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References

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