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Open AccessArticle
Laboratory Investigation of the Strength Degradation against Ultraviolet Radiation of Geonets for Slope Protection
by
Rui Zhang
Rui Zhang 1,2,3,
Huan Wang
Huan Wang 1,
Zhengnan Liu
Zhengnan Liu 1,4,*,
Xiang Wang
Xiang Wang 5,
Heping Yang
Heping Yang 1 and
Yani Zhang
Yani Zhang 1
1
School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China
2
National Key Laboratory of Green and Long-Life Road Engineering in Extreme Environment (Changsha), Changsha University of Science & Technology, Changsha 410114, China
3
Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety of Ministry of Education, Changsha University of Science & Technology, Changsha 410114, China
4
Hunan Communications Research Institute Co., Ltd., Changsha 410015, China
5
China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063, China
*
Author to whom correspondence should be addressed.
Materials 2024, 17(19), 4803; https://doi.org/10.3390/ma17194803 (registering DOI)
Submission received: 30 August 2024
/
Revised: 19 September 2024
/
Accepted: 26 September 2024
/
Published: 29 September 2024
Abstract
Sufficient light and high UV intensity pose significant challenges to the long-term performance of polymeric geonet materials for slope-protection structures. This study investigates strength degradation under the effect of UV radiation; five different types of geonets were selected, which can be categorized as polyamide (PA), polypropylene (PP), and polyethylene (PE) materials. A comprehensive experimental investigation was performed, including tension strength, peer strength, artificially accelerated aging, and SEM tests, to further establish a service life prediction method used for slope-protection design. The results showed that the tension strength, percentage of breaking elongation, and peer strength all depict a descending trend with aging-elapsed time, especially in the early 600 h. The decreasing tendency of these mechanical properties’ magnitude differed in the diversity of direction and material type. Significant changes have been generated on the geonet surface after aging; materials with smooth surfaces exhibit a strong ability against strength degradation. Fitting results affirmed the predictive technique as a useful engineering tool for tension strength assessments, offering guidelines for using and designing of geonets for slope-protection structures.
Share and Cite
MDPI and ACS Style
Zhang, R.; Wang, H.; Liu, Z.; Wang, X.; Yang, H.; Zhang, Y.
Laboratory Investigation of the Strength Degradation against Ultraviolet Radiation of Geonets for Slope Protection. Materials 2024, 17, 4803.
https://doi.org/10.3390/ma17194803
AMA Style
Zhang R, Wang H, Liu Z, Wang X, Yang H, Zhang Y.
Laboratory Investigation of the Strength Degradation against Ultraviolet Radiation of Geonets for Slope Protection. Materials. 2024; 17(19):4803.
https://doi.org/10.3390/ma17194803
Chicago/Turabian Style
Zhang, Rui, Huan Wang, Zhengnan Liu, Xiang Wang, Heping Yang, and Yani Zhang.
2024. "Laboratory Investigation of the Strength Degradation against Ultraviolet Radiation of Geonets for Slope Protection" Materials 17, no. 19: 4803.
https://doi.org/10.3390/ma17194803
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