Experimental Investigation on Mechanical Properties of Geocell Strips at Low Temperature
Geocell is widely used in the treatment of poor roadbed, which can restrain soil laterally and improve the stability of soil. In cold area engineering, a change in temperature can influence the mechanical properties of geocell of different materials. To study the mechanical response of geocell at lo...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/15/5456 |
| _version_ | 1797441466443759616 |
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| author | Qiyu Bai Guofeng He Yong Wang Jie Liu |
| author_facet | Qiyu Bai Guofeng He Yong Wang Jie Liu |
| author_sort | Qiyu Bai |
| collection | DOAJ |
| description | Geocell is widely used in the treatment of poor roadbed, which can restrain soil laterally and improve the stability of soil. In cold area engineering, a change in temperature can influence the mechanical properties of geocell of different materials. To study the mechanical response of geocell at low temperatures, three types of geocell strips commonly used in engineering, namely the polyethylene (HDPE), polypropylene (PP), and polyester (PET), were studied via the uniaxial tensile test at the ambient temperatures of −5 °C, −20 °C, and −35 °C, respectively. Meanwhile, the tensile strength, fracture mode, and temperature sensitivity of geocell specimens were compared. It is concluded that: (1) at low temperatures, the tensile strengths of HDPE and PET geocell strips are significantly improved, while that of the PP geocell strip is less sensitive to the temperature. (2) The PP geocell is subject to a brittle failure at all ambient temperatures. The PET geocell strip experiences a hard-ductile failure at normal temperatures of −5 °C and −20 °C. While in the tensile test at −35 °C, it is prone to brittle failure and hard-ductile failure. The HDPE geocell strip suffers from ductile failure at all ambient temperatures. (3) At low temperatures, overall, the tensile properties of the PET geocell strip is better than those of the PP and HDPE geocell strips. |
| first_indexed | 2024-03-09T12:23:28Z |
| format | Article |
| id | doaj.art-26bf2e979b6a46b3bba420f4419c9eff |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T12:23:28Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-26bf2e979b6a46b3bba420f4419c9eff2023-11-30T22:37:03ZengMDPI AGMaterials1996-19442022-08-011515545610.3390/ma15155456Experimental Investigation on Mechanical Properties of Geocell Strips at Low TemperatureQiyu Bai0Guofeng He1Yong Wang2Jie Liu3College of Water and Architectural Engineering, Shihezi University, Shihezi 832003, ChinaXinjiang Transportation Planning Surveying and Design Institute Co., Ltd., Urumqi 830006, ChinaCollege of Water and Architectural Engineering, Shihezi University, Shihezi 832003, ChinaXinjiang Transportation Planning Surveying and Design Institute Co., Ltd., Urumqi 830006, ChinaGeocell is widely used in the treatment of poor roadbed, which can restrain soil laterally and improve the stability of soil. In cold area engineering, a change in temperature can influence the mechanical properties of geocell of different materials. To study the mechanical response of geocell at low temperatures, three types of geocell strips commonly used in engineering, namely the polyethylene (HDPE), polypropylene (PP), and polyester (PET), were studied via the uniaxial tensile test at the ambient temperatures of −5 °C, −20 °C, and −35 °C, respectively. Meanwhile, the tensile strength, fracture mode, and temperature sensitivity of geocell specimens were compared. It is concluded that: (1) at low temperatures, the tensile strengths of HDPE and PET geocell strips are significantly improved, while that of the PP geocell strip is less sensitive to the temperature. (2) The PP geocell is subject to a brittle failure at all ambient temperatures. The PET geocell strip experiences a hard-ductile failure at normal temperatures of −5 °C and −20 °C. While in the tensile test at −35 °C, it is prone to brittle failure and hard-ductile failure. The HDPE geocell strip suffers from ductile failure at all ambient temperatures. (3) At low temperatures, overall, the tensile properties of the PET geocell strip is better than those of the PP and HDPE geocell strips.https://www.mdpi.com/1996-1944/15/15/5456road engineeringgeocell striplow temperaturetensile strength |
| spellingShingle | Qiyu Bai Guofeng He Yong Wang Jie Liu Experimental Investigation on Mechanical Properties of Geocell Strips at Low Temperature Materials road engineering geocell strip low temperature tensile strength |
| title | Experimental Investigation on Mechanical Properties of Geocell Strips at Low Temperature |
| title_full | Experimental Investigation on Mechanical Properties of Geocell Strips at Low Temperature |
| title_fullStr | Experimental Investigation on Mechanical Properties of Geocell Strips at Low Temperature |
| title_full_unstemmed | Experimental Investigation on Mechanical Properties of Geocell Strips at Low Temperature |
| title_short | Experimental Investigation on Mechanical Properties of Geocell Strips at Low Temperature |
| title_sort | experimental investigation on mechanical properties of geocell strips at low temperature |
| topic | road engineering geocell strip low temperature tensile strength |
| url | https://www.mdpi.com/1996-1944/15/15/5456 |
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