Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes
The swelling properties of expansive soils can be reduced by the addition of modifiers. Nevertheless, the performance deterioration after modification occurs when weathering for a long term. Therefore, in this study, the effect of drying-wetting cycles on swelling behaviour and compressibility of mo...
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| Main Authors: | , , , , , , |
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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/10.1155/2020/5602163 |
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| author | Chengfu Chu Meihuang Zhan Qi Feng Dong Li Long Xu Fusheng Zha Yongfeng Deng |
| author_facet | Chengfu Chu Meihuang Zhan Qi Feng Dong Li Long Xu Fusheng Zha Yongfeng Deng |
| author_sort | Chengfu Chu |
| collection | DOAJ |
| description | The swelling properties of expansive soils can be reduced by the addition of modifiers. Nevertheless, the performance deterioration after modification occurs when weathering for a long term. Therefore, in this study, the effect of drying-wetting cycles on swelling behaviour and compressibility of modified expansive soils with the iron tailing sand and calcium carbide slag has been investigated. The swelling potential initially increases and subsequently decreases with the increasing number of cycles, reaches the peak at the seventh cycle, and tends to equilibrium after the tenth cycle. These results show that drying-wetting cycles will destroy the soil structure. The compressibility of modified expansive soils increases with the drying-wetting cycles, where an empirical formula between compressibility and the cycle number was established. Microstructural analysis is performed using mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). The results of microstructural analysis show a tendency of degradation process. |
| format | Article |
| id | doaj-art-13821462f8134635a86477a68c7ab14e |
| 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-13821462f8134635a86477a68c7ab14e2025-02-03T01:04:09ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/56021635602163Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial WastesChengfu Chu0Meihuang Zhan1Qi Feng2Dong Li3Long Xu4Fusheng Zha5Yongfeng Deng6Hefei University of Technology, School of Resources and Environmental Engineering, Hefei 230009, ChinaHefei University of Technology, School of Resources and Environmental Engineering, Hefei 230009, ChinaHefei University of Technology, School of Resources and Environmental Engineering, Hefei 230009, ChinaHefei University of Technology, School of Resources and Environmental Engineering, Hefei 230009, ChinaHefei University of Technology, School of Resources and Environmental Engineering, Hefei 230009, ChinaHefei University of Technology, School of Resources and Environmental Engineering, Hefei 230009, ChinaSoutheast University, School of Transportation, Nanjing 211189, ChinaThe swelling properties of expansive soils can be reduced by the addition of modifiers. Nevertheless, the performance deterioration after modification occurs when weathering for a long term. Therefore, in this study, the effect of drying-wetting cycles on swelling behaviour and compressibility of modified expansive soils with the iron tailing sand and calcium carbide slag has been investigated. The swelling potential initially increases and subsequently decreases with the increasing number of cycles, reaches the peak at the seventh cycle, and tends to equilibrium after the tenth cycle. These results show that drying-wetting cycles will destroy the soil structure. The compressibility of modified expansive soils increases with the drying-wetting cycles, where an empirical formula between compressibility and the cycle number was established. Microstructural analysis is performed using mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). The results of microstructural analysis show a tendency of degradation process.http://dx.doi.org/10.1155/2020/5602163 |
| spellingShingle | Chengfu Chu Meihuang Zhan Qi Feng Dong Li Long Xu Fusheng Zha Yongfeng Deng Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes Advances in Materials Science and Engineering |
| title | Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes |
| title_full | Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes |
| title_fullStr | Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes |
| title_full_unstemmed | Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes |
| title_short | Effect of Drying-Wetting Cycles on Engineering Properties of Expansive Soils Modified by Industrial Wastes |
| title_sort | effect of drying wetting cycles on engineering properties of expansive soils modified by industrial wastes |
| url | http://dx.doi.org/10.1155/2020/5602163 |
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