Experimental Investigations on the Tensile Mechanical Behavior of HDPE Geocell Strip

Zuo, Zheng Xing; Hao, Xi; Li, Huiqiang; Wang, Wei; Yang, Guangqing; Liu, Ying

doi:10.3390/su15107820

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…Liu [17] studied the failure mechanism of geocell strips and junctions under various loading conditions through a series of laboratory tests, such as the uniaxial tensile test, shear, and peeling test. Zuo [24] investigated the effect of specimen shape and specimen width on the tensile mechanical behavior of the HDPE geocell strip. Additionally, the effect of the welding junction on the tensile properties of the geocell strip was also studied.…”

Section: Geocell Heightmentioning

confidence: 99%

“…Therefore, geocells are also referred to as cellular confinement systems. The lateral confinement provided by the geocell is superior to planar reinforcement material such as geogrid and geotextile [24]. In addition, the geocell can also be applied in slopes [22,25], because it can prevent soil erosion [26] on the slope surface subjected to wind and rain.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Geocell Heightmentioning

confidence: 99%

Section: Introductionmentioning

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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“…Three types of materials commonly used for fishing nets include: polyamide (PA), polyethylene (PE), and polypropylene (PP) [23][24][25], with each having different structural characteristics. Polyamide, also known as nylon, is a monolithic and transparent PA yarn.…”

Section: Preparation Of the Materialsmentioning

confidence: 99%

Trawl Grid Structure Design and Analysis Using the Finite Element Method

Nguyen

Huang

2023

Applied Sciences

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The structure of fishnet knots has been simplified in previous studies to facilitate the construction of numerical equations of the fishnet structure. This leads to errors in the dynamic analysis of the trawl mesh structure with water flow. In this study, the finite element method was used to analyze the interaction of the trawl mesh structure with the solid object in a dynamic explicit environment. At the same time, design variables were optimized through impact assessment and the displacement of grid cells. The results show that the polyamide (PA) material, a 0.4 mm cross-section, and a 25 mm mesh size are the optimal choices. When the displacement speed of the solid body increased, the displacement and collision values of the mesh structure tended to increase gradually along the quadratic curve. Confirmation tests performed on the tensile tester machine showed a good load-carrying capacity of up to 1280 MPa for trawl mesh structures using the PA material. The characteristic curve for the stress of the trawl mesh structure is shown through the higher-order curve.

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“…Geocells are an effective method to reinforce soil foundations, especially transport infrastructure foundations. To improve our understanding of geocell strip behaviour, a series of tensile and trapezoidal tests were carried out [5]. Key parameters such as the shape, width and welding junction of (HDPE) geocell specimens were addressed.…”

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confidence: 99%