Experimental Investigation on Failure Mechanisms of HDPE Welded Geocell Junctions under Different Clamping Distances

Yang, Guangqing; Su, Penghui; Xu, Peng; Wang, Zhijie; Wang, He; Zuo, Zheng Xing

doi:10.3390/app12115343

Cited by 3 publications

(3 citation statements)

References 22 publications

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“…Rezekne, Latvia Proceedings of the 14 th International Scientific and Practical Conference. Volume 3,[214][215][216][217][218] The results, compared with other authors [20] - [22], are reliable and no deviations were observed in the regression analyses. They may be used and applied in engineering practice.…”

Section: • Hardnessmentioning

confidence: 52%

Influence of Adding Polypropylene(pp) Into Polyethylene(pe) on Mechanical Properties of Geocells

Sabev,

Kasabov,

Chukalov

et al. 2023

ETR

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Section: • Hardnessmentioning

confidence: 52%

Influence of Adding Polypropylene(pp) Into Polyethylene(pe) on Mechanical Properties of Geocells

Sabev,

Kasabov,

Chukalov

et al. 2023

ETR

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“…The results revealed that the tensile performance of the PET geocell strip is superior to that of the PP and HDPE geocell strips. Yang [32] conducted a series of laboratory tests on HDPE geocell strips with welding junctions, studied the effect of clamping distance on the strength of geocell strips and junctions, and presented a laying method of geocells on slopes based on the findings. The aforementioned literature studied the influence of strain rate, specimen shape and size, temperature, and clamping distance on the tensile mechanical properties of geocell strips and junctions.…”

Section: Geocell Heightmentioning

confidence: 99%

Effect of the Slit on the Mechanical Tearing Behavior of High-Density Polyethylene and Polyester Geocell Strips

Zuo,

Hao,

et al. 2023

Sustainability

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Geocells are widely applied in numerous infrastructure constructions, like heavy-haul railways and ports. The mechanical tearing behavior of a geocell strip is crucial to the stability of the geocell-reinforced soil structures. At present, extensive studies have been conducted on the tensile characteristics of geocell strips, while limited research has been performed to investigate the post-damage mechanical tearing behavior of geocell strips. Meanwhile, there is also a lack of research on the comparison of performance of strips before and after damage. In this paper, a series of trapezoidal tearing tests were performed on high-density polyethylene (HDPE) and polyester (PET) geocell strips. The tearing test results and failure mode of trapezoidal specimens with a slit were investigated, and the effect of the slit on the strength and deformation characteristics of the specimen were discussed by introducing the “damage ratio of tearing force (RTF)” and “damage ratio of tearing displacement (RTD)”. In addition, the mechanical tearing behavior of HDPE and PET trapezoidal specimens was also compared. The test results indicated that the failure mode of HDPE and PET specimens subjected to tearing force was ductile and brittle failure. The strength and deformation characteristics of post-damage HDPE and PET trapezoidal specimens decreased. The slit had a significant impact on the tearing displacement of HDPE and PET specimens, especially the post-peak tearing displacement. The post-peak tearing displacement of HDPE was 10.99 times that of PET. The peak tearing force of the HDPE specimen without the slit was about 1.61 times that of specimen with the slit. Before local tearing, the peak tearing force of the PET specimen without the slit was about 3.27 times that of the specimen with the slit. The strength damage to the HDPE and PET geocell strips caused by the slit was 38.0%, and 69.46%. The impact of the slit on the tearing force of the PET specimen was greater than that of the HDPE, and was 1.82 times for the HDPE. This study can enhance our understanding of the mechanical tearing behavior of the geocell strip after damage and develop effective mitigation measures.

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“…The test results of the strip with and without a junction also lacked comparison. Yang [24] studied the failure mechanisms of junctions under different clamping distances but did not consider the influence of the junction on the geocell strip.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on the Tensile Mechanical Behavior of HDPE Geocell Strip

Zuo¹,

Hao²,

Li³

et al. 2023

Sustainability

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Geocells are commonly adopted in various engineering constructions, such as railways and ports. Currently, the reinforcement effects and mechanisms of geocells in engineering is being widely studied, while limited studies have been performed on the mechanical behavior of geocell strips. Uncertainties regarding their performance have impeded the wide application of geocells in engineering fields. In this paper, a series of tensile tests and trapezoidal tests were performed on high-density polyethylene (HDPE) geocell strips. The effects regarding specimen shape, specimen width, and welding junction on the tensile mechanical behavior of HDPE geocell strips were investigated. Additionally, the results of the tensile test and trapezoidal test were also compared. The test results showed that the tensile strength of a HDPE geocell strip was less affected by the specimen shape and specimen width, within 5%. However, the elongation of HDPE strips was sensitive to the specimen shape, and the difference between type I dumbbell and type II rectangular was up to 38%. The effect of the welding junction on the HDPE strip cannot be ignored, the strength retention rate of the welding junction was 76.3%. The curve of the trapezoidal test was similar to that of the tensile test, and the force of trapezoidal test was 0.87 times that of the tensile test. The test results can provide a reference for the testing of strip performance and structural design.

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Experimental Investigation on Failure Mechanisms of HDPE Welded Geocell Junctions under Different Clamping Distances

Cited by 3 publications

References 22 publications

Influence of Adding Polypropylene(pp) Into Polyethylene(pe) on Mechanical Properties of Geocells

Influence of Adding Polypropylene(pp) Into Polyethylene(pe) on Mechanical Properties of Geocells

Effect of the Slit on the Mechanical Tearing Behavior of High-Density Polyethylene and Polyester Geocell Strips

Experimental Investigations on the Tensile Mechanical Behavior of HDPE Geocell Strip

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