Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive Soil
Dynamic resilient modulus is the design index of highway subgrade design code in China, which is significantly affected by the traffic loads and environmental changes. In this study, dynamic triaxial tests were conducted to investigate the influence of moisture content, compaction degree, cyclic dev...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/3272681 |
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| _version_ | 1832567449847857152 |
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| author | Zheng Lu Yang Zhao Shaohua Xian Hailin Yao |
| author_facet | Zheng Lu Yang Zhao Shaohua Xian Hailin Yao |
| author_sort | Zheng Lu |
| collection | DOAJ |
| description | Dynamic resilient modulus is the design index of highway subgrade design code in China, which is significantly affected by the traffic loads and environmental changes. In this study, dynamic triaxial tests were conducted to investigate the influence of moisture content, compaction degree, cyclic deviator stress, and confining pressure on lime-treated expansive soil. The suitability of UT-Austin model to lime-treated expansive soils was verified. The results indicate that the dynamic resilient modulus of lime-treated expansive soils increases nonlinearly with the increase of compaction degree, while decreases nonlinearly with the increase of dynamic stress level. The dynamic resilient modulus decreases linearly with the increase of moisture content and increases linearly with the increase of confining pressure. Moreover, the moisture content has a more significant effect on the dynamic resilient modulus of lime-treated expansive soil. Therefore, it is necessary to ensure the stability of soil humidity state and its excellent mechanical properties under long-term cyclic loading for the course of subgrade filling and service. Finally, the calculated results of the UT-Austin model for dynamic resilient modulus show a good agreement with the test results. |
| format | Article |
| id | doaj-art-5c4c55accb1844b2a0c4bd7e6d200d21 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-5c4c55accb1844b2a0c4bd7e6d200d212025-02-03T01:01:29ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/32726813272681Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive SoilZheng Lu0Yang Zhao1Shaohua Xian2Hailin Yao3State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaWuhan Municipal Engineering Design and Research Institute Co., Ltd., Wuhan 430023, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaDynamic resilient modulus is the design index of highway subgrade design code in China, which is significantly affected by the traffic loads and environmental changes. In this study, dynamic triaxial tests were conducted to investigate the influence of moisture content, compaction degree, cyclic deviator stress, and confining pressure on lime-treated expansive soil. The suitability of UT-Austin model to lime-treated expansive soils was verified. The results indicate that the dynamic resilient modulus of lime-treated expansive soils increases nonlinearly with the increase of compaction degree, while decreases nonlinearly with the increase of dynamic stress level. The dynamic resilient modulus decreases linearly with the increase of moisture content and increases linearly with the increase of confining pressure. Moreover, the moisture content has a more significant effect on the dynamic resilient modulus of lime-treated expansive soil. Therefore, it is necessary to ensure the stability of soil humidity state and its excellent mechanical properties under long-term cyclic loading for the course of subgrade filling and service. Finally, the calculated results of the UT-Austin model for dynamic resilient modulus show a good agreement with the test results.http://dx.doi.org/10.1155/2020/3272681 |
| spellingShingle | Zheng Lu Yang Zhao Shaohua Xian Hailin Yao Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive Soil Advances in Materials Science and Engineering |
| title | Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive Soil |
| title_full | Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive Soil |
| title_fullStr | Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive Soil |
| title_full_unstemmed | Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive Soil |
| title_short | Experimental Study on Dynamic Resilient Modulus of Lime-Treated Expansive Soil |
| title_sort | experimental study on dynamic resilient modulus of lime treated expansive soil |
| url | http://dx.doi.org/10.1155/2020/3272681 |
| work_keys_str_mv | AT zhenglu experimentalstudyondynamicresilientmodulusoflimetreatedexpansivesoil AT yangzhao experimentalstudyondynamicresilientmodulusoflimetreatedexpansivesoil AT shaohuaxian experimentalstudyondynamicresilientmodulusoflimetreatedexpansivesoil AT hailinyao experimentalstudyondynamicresilientmodulusoflimetreatedexpansivesoil |