Experimental Study on Interfacial Friction Characteristics of Reinforced Clay
Clay is one of the important base materials in slope restoration. The adhesion of clay–rock interface plays a decisive role in the repairing effect on rock slopes. Fibers and polymers are widely used as a clay improvement method in rock slope repair. In this paper, the friction effect of sisal fiber...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/21/4626 |
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| author | Chenyang Zhang Hong Mei Guochang Hu Jin Liu Jian Xue Xiaoyong Zhu Hongning Lu Zezhuo Song Wenyue Che |
| author_facet | Chenyang Zhang Hong Mei Guochang Hu Jin Liu Jian Xue Xiaoyong Zhu Hongning Lu Zezhuo Song Wenyue Che |
| author_sort | Chenyang Zhang |
| collection | DOAJ |
| description | Clay is one of the important base materials in slope restoration. The adhesion of clay–rock interface plays a decisive role in the repairing effect on rock slopes. Fibers and polymers are widely used as a clay improvement method in rock slope repair. In this paper, the friction effect of sisal fiber and polyvinyl acetate (PVAc)-reinforced clay was studied through the design of an indoor rock-like interface sliding model test. Using modelled test results and scanning electron microscope (SEM) images, the reinforced clay was analyzed. The test results showed that the critical sliding angle and maximum static friction force of clay decreased with the increase of moisture content. An excess of fiber content and moisture content weakens the coupling effect of fiber-anchoring clay. Fiber content of 0.8% and PVAc content of 2% had the best effect on enhancing the sliding resistance of clay and provided good adhesion for dangerous interfaces of rock slope at 35° and 45°, respectively. PVAc formed a three-dimensional networked elastic membrane structure to improve the skid resistance and dynamic friction coefficient of the clay. The results provide an effective way for soil improvement and ecological restoration. |
| first_indexed | 2024-03-09T18:43:27Z |
| format | Article |
| id | doaj.art-c6c5e46bfa1449079796ba6bdccd0818 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T18:43:27Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-c6c5e46bfa1449079796ba6bdccd08182023-11-24T06:29:16ZengMDPI AGPolymers2073-43602022-10-011421462610.3390/polym14214626Experimental Study on Interfacial Friction Characteristics of Reinforced ClayChenyang Zhang0Hong Mei1Guochang Hu2Jin Liu3Jian Xue4Xiaoyong Zhu5Hongning Lu6Zezhuo Song7Wenyue Che8School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaFirst Geological Brigade of Jiangsu Geology & Mineral Exploration Bureau, Jiangsu Geological Bureau, Nanjing 210000, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaFirst Geological Brigade of Jiangsu Geology & Mineral Exploration Bureau, Jiangsu Geological Bureau, Nanjing 210000, ChinaFirst Geological Brigade of Jiangsu Geology & Mineral Exploration Bureau, Jiangsu Geological Bureau, Nanjing 210000, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 210098, ChinaClay is one of the important base materials in slope restoration. The adhesion of clay–rock interface plays a decisive role in the repairing effect on rock slopes. Fibers and polymers are widely used as a clay improvement method in rock slope repair. In this paper, the friction effect of sisal fiber and polyvinyl acetate (PVAc)-reinforced clay was studied through the design of an indoor rock-like interface sliding model test. Using modelled test results and scanning electron microscope (SEM) images, the reinforced clay was analyzed. The test results showed that the critical sliding angle and maximum static friction force of clay decreased with the increase of moisture content. An excess of fiber content and moisture content weakens the coupling effect of fiber-anchoring clay. Fiber content of 0.8% and PVAc content of 2% had the best effect on enhancing the sliding resistance of clay and provided good adhesion for dangerous interfaces of rock slope at 35° and 45°, respectively. PVAc formed a three-dimensional networked elastic membrane structure to improve the skid resistance and dynamic friction coefficient of the clay. The results provide an effective way for soil improvement and ecological restoration.https://www.mdpi.com/2073-4360/14/21/4626claysisal fiberpolyvinyl acetatesliding model testreinforced mechanism |
| spellingShingle | Chenyang Zhang Hong Mei Guochang Hu Jin Liu Jian Xue Xiaoyong Zhu Hongning Lu Zezhuo Song Wenyue Che Experimental Study on Interfacial Friction Characteristics of Reinforced Clay Polymers clay sisal fiber polyvinyl acetate sliding model test reinforced mechanism |
| title | Experimental Study on Interfacial Friction Characteristics of Reinforced Clay |
| title_full | Experimental Study on Interfacial Friction Characteristics of Reinforced Clay |
| title_fullStr | Experimental Study on Interfacial Friction Characteristics of Reinforced Clay |
| title_full_unstemmed | Experimental Study on Interfacial Friction Characteristics of Reinforced Clay |
| title_short | Experimental Study on Interfacial Friction Characteristics of Reinforced Clay |
| title_sort | experimental study on interfacial friction characteristics of reinforced clay |
| topic | clay sisal fiber polyvinyl acetate sliding model test reinforced mechanism |
| url | https://www.mdpi.com/2073-4360/14/21/4626 |
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