Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints
The effects of freezing-thawing cycles and persistency differences have a significant impact on the shear mechanical properties of joints. In this paper, a series of joints direct shear tests were performed on freezing-thawing treated joints to investigate the effect of freezing-thawing cycles and t...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/9867681 |
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| author | Daxing Lei Hang Lin Yifan Chen Rihong Cao Zhijie Wen |
| author_facet | Daxing Lei Hang Lin Yifan Chen Rihong Cao Zhijie Wen |
| author_sort | Daxing Lei |
| collection | DOAJ |
| description | The effects of freezing-thawing cycles and persistency differences have a significant impact on the shear mechanical properties of joints. In this paper, a series of joints direct shear tests were performed on freezing-thawing treated joints to investigate the effect of freezing-thawing cycles and the persistency on the shear strength deterioration of joints. Shear strength and residual strength decrease with the freezing-thawing cycle increase and joint persistency increase. Shear strength damage mainly generates in the initial stage of the freezing-thawing cycle, and the shear strength decreases slightly in the late freezing-thawing cycle stage. The freeze-thaw cycle has a minimal effect on the shear strength of joints with low persistency, yet has a great effect on joints with high persistency. The damage of joint roughness caused by freezing-thawing cycles increases with joint persistency increases. When the joint persistency is constant, the shear strength parameter decreases with the freezing-thawing cycle at first and then tends to be stable. Cohesion is the dominant factor that controls shear strength. When freezing-thawing cycles are constant, the friction angle decreases slowly with persistency at first and then decreases rapidly, and the friction angle is the dominant factor that controls shear strength. |
| format | Article |
| id | doaj-art-d4b72e2a766a405ebe7913e5e4da14d8 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-d4b72e2a766a405ebe7913e5e4da14d82025-02-03T06:01:26ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/98676819867681Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent JointsDaxing Lei0Hang Lin1Yifan Chen2Rihong Cao3Zhijie Wen4School of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, ChinaThe effects of freezing-thawing cycles and persistency differences have a significant impact on the shear mechanical properties of joints. In this paper, a series of joints direct shear tests were performed on freezing-thawing treated joints to investigate the effect of freezing-thawing cycles and the persistency on the shear strength deterioration of joints. Shear strength and residual strength decrease with the freezing-thawing cycle increase and joint persistency increase. Shear strength damage mainly generates in the initial stage of the freezing-thawing cycle, and the shear strength decreases slightly in the late freezing-thawing cycle stage. The freeze-thaw cycle has a minimal effect on the shear strength of joints with low persistency, yet has a great effect on joints with high persistency. The damage of joint roughness caused by freezing-thawing cycles increases with joint persistency increases. When the joint persistency is constant, the shear strength parameter decreases with the freezing-thawing cycle at first and then tends to be stable. Cohesion is the dominant factor that controls shear strength. When freezing-thawing cycles are constant, the friction angle decreases slowly with persistency at first and then decreases rapidly, and the friction angle is the dominant factor that controls shear strength.http://dx.doi.org/10.1155/2019/9867681 |
| spellingShingle | Daxing Lei Hang Lin Yifan Chen Rihong Cao Zhijie Wen Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints Advances in Materials Science and Engineering |
| title | Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints |
| title_full | Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints |
| title_fullStr | Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints |
| title_full_unstemmed | Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints |
| title_short | Effect of Cyclic Freezing-Thawing on the Shear Mechanical Characteristics of Nonpersistent Joints |
| title_sort | effect of cyclic freezing thawing on the shear mechanical characteristics of nonpersistent joints |
| url | http://dx.doi.org/10.1155/2019/9867681 |
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