Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen Zone
In deep season frozen areas, the solidified layer is easy to be destroyed due to the influence of freeze-thaw cycles after the surface layer of the sandy slope is solidified by chemical methods. In order to study the application effect of the new sand consolidating agent after solidifying sand body,...
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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 Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/3716153 |
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| author | Dongliang Zhang Guangqing Yang Xiaodi Niu Lu Zhang Zhijie Wang |
| author_facet | Dongliang Zhang Guangqing Yang Xiaodi Niu Lu Zhang Zhijie Wang |
| author_sort | Dongliang Zhang |
| collection | DOAJ |
| description | In deep season frozen areas, the solidified layer is easy to be destroyed due to the influence of freeze-thaw cycles after the surface layer of the sandy slope is solidified by chemical methods. In order to study the application effect of the new sand consolidating agent after solidifying sand body, the mechanism of strength formation was analyzed by scanning electron microscopy (SEM). The freeze-thaw cycle tests were carried out on sand consolidating samples. The direct shear tests and unconfined compressive strength tests were carried out before and after freeze-thaw cycles to analyze the freeze-thaw resistance of sand consolidating samples. The sand consolidation agent was tested on-site, and its strength was tested to observe its effect. The results showed that the adhesive membranes on the surface of sand particles were formed by the sand consolidating agent, which increased the cohesion and strength of sand particles. After freeze-thaw cycle tests, the cohesion, internal friction angle, and compressive strength of the solidified sand gradually decreased with increasing freeze-thaw cycles. The decreasing rate reduced from fast to slow and then tends to be stable. The failure mode of samples changed from brittle failure to plastic failure. The sand consolidating layer can effectively prevent collapse of the sandy slope. Combining with the external-soil spray seeding, the sand consolidation layer is beneficial to the growth of plants. |
| format | Article |
| id | doaj-art-a4be4252ccbc409d9aa99ce5e37b308c |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-a4be4252ccbc409d9aa99ce5e37b308c2025-02-03T05:47:56ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/37161533716153Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen ZoneDongliang Zhang0Guangqing Yang1Xiaodi Niu2Lu Zhang3Zhijie Wang4China Construction Infrastructure Corp., Ltd., Beijing 100020, ChinaSchool of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, ChinaSchool of Traffic and Transportation, Shijiazhuang Tiedao University, Shijiazhuang, Heibei 050043, ChinaChina Construction Infrastructure Corp., Ltd., Beijing 100020, ChinaSchool of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang, Hebei 050043, ChinaIn deep season frozen areas, the solidified layer is easy to be destroyed due to the influence of freeze-thaw cycles after the surface layer of the sandy slope is solidified by chemical methods. In order to study the application effect of the new sand consolidating agent after solidifying sand body, the mechanism of strength formation was analyzed by scanning electron microscopy (SEM). The freeze-thaw cycle tests were carried out on sand consolidating samples. The direct shear tests and unconfined compressive strength tests were carried out before and after freeze-thaw cycles to analyze the freeze-thaw resistance of sand consolidating samples. The sand consolidation agent was tested on-site, and its strength was tested to observe its effect. The results showed that the adhesive membranes on the surface of sand particles were formed by the sand consolidating agent, which increased the cohesion and strength of sand particles. After freeze-thaw cycle tests, the cohesion, internal friction angle, and compressive strength of the solidified sand gradually decreased with increasing freeze-thaw cycles. The decreasing rate reduced from fast to slow and then tends to be stable. The failure mode of samples changed from brittle failure to plastic failure. The sand consolidating layer can effectively prevent collapse of the sandy slope. Combining with the external-soil spray seeding, the sand consolidation layer is beneficial to the growth of plants.http://dx.doi.org/10.1155/2019/3716153 |
| spellingShingle | Dongliang Zhang Guangqing Yang Xiaodi Niu Lu Zhang Zhijie Wang Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen Zone Advances in Civil Engineering |
| title | Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen Zone |
| title_full | Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen Zone |
| title_fullStr | Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen Zone |
| title_full_unstemmed | Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen Zone |
| title_short | Study on Application Effect of Sand Consolidating Agent for the Slope of Highway Subgrade in Season Frozen Zone |
| title_sort | study on application effect of sand consolidating agent for the slope of highway subgrade in season frozen zone |
| url | http://dx.doi.org/10.1155/2019/3716153 |
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