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Puncture Behavior of HDPE Geomembranes with Defects: Laboratory Investigation
https://orcid.org/http://orcid.org/0000-0002-4182-2401
In this study, a series of puncture tests were conducted to investigate the puncture behavior of defective geomembranes with different types of defect, including crack, scratch and circular hole. The rupture patterns of geomembranes with different types of defect were summarized to further understand the rupture behavior of geomembranes. In addition, the influences of the thickness of geomembranes and the size of defects were evaluated. The results show, for defective geomembranes, the puncture resistance and puncture displacement are closely related to the length of the crack, the scratching depth and the diameter of circular hole, and some mathematical fitting models can well predict the relationship between the puncture resistance and defect size. The expansion of the defect to relatively large size can be observed during puncturing, which significantly reduces the puncture resistance of geomembranes. The present laboratory study provides a great reference value for the practical design of protective layer to avoid puncturing of geomembranes or for minimizing the adverse effects of existing defects of geomembranes.
Puncture Behavior of HDPE Geomembranes with Defects: Laboratory Investigation
https://orcid.org/http://orcid.org/0000-0002-4182-2401
In this study, a series of puncture tests were conducted to investigate the puncture behavior of defective geomembranes with different types of defect, including crack, scratch and circular hole. The rupture patterns of geomembranes with different types of defect were summarized to further understand the rupture behavior of geomembranes. In addition, the influences of the thickness of geomembranes and the size of defects were evaluated. The results show, for defective geomembranes, the puncture resistance and puncture displacement are closely related to the length of the crack, the scratching depth and the diameter of circular hole, and some mathematical fitting models can well predict the relationship between the puncture resistance and defect size. The expansion of the defect to relatively large size can be observed during puncturing, which significantly reduces the puncture resistance of geomembranes. The present laboratory study provides a great reference value for the practical design of protective layer to avoid puncturing of geomembranes or for minimizing the adverse effects of existing defects of geomembranes.
Puncture Behavior of HDPE Geomembranes with Defects: Laboratory Investigation
https://orcid.org/http://orcid.org/0000-0002-4182-2401
In this study, a series of puncture tests were conducted to investigate the puncture behavior of defective geomembranes with different types of defect, including crack, scratch and circular hole. The rupture patterns of geomembranes with different types of defect were summarized to further understand the rupture behavior of geomembranes. In addition, the influences of the thickness of geomembranes and the size of defects were evaluated. The results show, for defective geomembranes, the puncture resistance and puncture displacement are closely related to the length of the crack, the scratching depth and the diameter of circular hole, and some mathematical fitting models can well predict the relationship between the puncture resistance and defect size. The expansion of the defect to relatively large size can be observed during puncturing, which significantly reduces the puncture resistance of geomembranes. The present laboratory study provides a great reference value for the practical design of protective layer to avoid puncturing of geomembranes or for minimizing the adverse effects of existing defects of geomembranes.
Puncture Behavior of HDPE Geomembranes with Defects: Laboratory Investigation
Int. J. of Geosynth. and Ground Eng.
Cen, W. J. (author) / Zheng, C. H. (author) / Wang, H. (author) / Geng, L. Y. (author) / Wang, M. M. (author)
2022-02-01
Article (Journal)
Electronic Resource
English
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