Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature Conditions
Temperature is one of the important factors affecting the mechanical properties of geotechnical soils, and its role in engineering construction in China cannot be underestimated. In order to study the effects of temperature and zinc contamination concentration on the mechanical properties of Guilin...
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/21/10742 |
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| author | Jianqiang Wang Yu Song Shuaishuai Dong Song Ding Yukun Geng Xiaotong Gao |
| author_facet | Jianqiang Wang Yu Song Shuaishuai Dong Song Ding Yukun Geng Xiaotong Gao |
| author_sort | Jianqiang Wang |
| collection | DOAJ |
| description | Temperature is one of the important factors affecting the mechanical properties of geotechnical soils, and its role in engineering construction in China cannot be underestimated. In order to study the effects of temperature and zinc contamination concentration on the mechanical properties of Guilin local red clay, a temperature-controlled triaxial shear test was conducted on Guilin red clay under three variables of temperature, zinc contamination concentration and surrounding pressure. The test findings revealed that there are significant differences in the effects of temperature, zinc contamination concentration and surrounding pressure on the mechanical properties of Guilin red clay. The stress–strain curves of the red clay at various temperatures, contamination concentrations and envelope pressures are of the strain-hardening type, and the deformation modulus showed a tendency to increase rapidly with increasing strain, then decrease rapidly, and finally, decrease slowly. With the increase of temperature, the cohesion of Zn-contaminated red clay increases, while the angle of internal friction increases and then decreases, both of which increase the shear strength of red clay. As the concentration of Zn contamination grows, the shear strength of the red clay increases, while the internal friction angle increases and then decreases, and the shear strength of the soil increases and then decreases. The shear strength of the Zn-contaminated red clay improved as the surrounding pressure increased. |
| first_indexed | 2024-03-09T19:19:26Z |
| format | Article |
| id | doaj.art-d282cebb8ab040dc9c07697f69785871 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T19:19:26Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-d282cebb8ab040dc9c07697f697858712023-11-24T03:32:05ZengMDPI AGApplied Sciences2076-34172022-10-0112211074210.3390/app122110742Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature ConditionsJianqiang Wang0Yu Song1Shuaishuai Dong2Song Ding3Yukun Geng4Xiaotong Gao5College of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, ChinaCollege of Civil and Architecture Engineering, Guilin University of Technology, Guilin 541004, ChinaTemperature is one of the important factors affecting the mechanical properties of geotechnical soils, and its role in engineering construction in China cannot be underestimated. In order to study the effects of temperature and zinc contamination concentration on the mechanical properties of Guilin local red clay, a temperature-controlled triaxial shear test was conducted on Guilin red clay under three variables of temperature, zinc contamination concentration and surrounding pressure. The test findings revealed that there are significant differences in the effects of temperature, zinc contamination concentration and surrounding pressure on the mechanical properties of Guilin red clay. The stress–strain curves of the red clay at various temperatures, contamination concentrations and envelope pressures are of the strain-hardening type, and the deformation modulus showed a tendency to increase rapidly with increasing strain, then decrease rapidly, and finally, decrease slowly. With the increase of temperature, the cohesion of Zn-contaminated red clay increases, while the angle of internal friction increases and then decreases, both of which increase the shear strength of red clay. As the concentration of Zn contamination grows, the shear strength of the red clay increases, while the internal friction angle increases and then decreases, and the shear strength of the soil increases and then decreases. The shear strength of the Zn-contaminated red clay improved as the surrounding pressure increased.https://www.mdpi.com/2076-3417/12/21/10742temperaturestress–strain curvesmodulus of deformationshear strengthshear strength index |
| spellingShingle | Jianqiang Wang Yu Song Shuaishuai Dong Song Ding Yukun Geng Xiaotong Gao Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature Conditions Applied Sciences temperature stress–strain curves modulus of deformation shear strength shear strength index |
| title | Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature Conditions |
| title_full | Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature Conditions |
| title_fullStr | Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature Conditions |
| title_full_unstemmed | Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature Conditions |
| title_short | Triaxial Experimental Study of Zinc Contaminated Red Clay under Different Temperature Conditions |
| title_sort | triaxial experimental study of zinc contaminated red clay under different temperature conditions |
| topic | temperature stress–strain curves modulus of deformation shear strength shear strength index |
| url | https://www.mdpi.com/2076-3417/12/21/10742 |
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