Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic Field
Applications of soil improvement have proliferated in recent years. To date, we have limited studies on the quantitative analyses of the autoadaptive material and specifically to model its stress-strain relationship. This paper explored an autoadaptive material, iron-powdered Ottawa sand, which was...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/3281269 |
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| author | Ying Lai Bin Zhu Xiangtian Xu |
| author_facet | Ying Lai Bin Zhu Xiangtian Xu |
| author_sort | Ying Lai |
| collection | DOAJ |
| description | Applications of soil improvement have proliferated in recent years. To date, we have limited studies on the quantitative analyses of the autoadaptive material and specifically to model its stress-strain relationship. This paper explored an autoadaptive material, iron-powdered Ottawa sand, which was temporarily solidified by applying an electromagnetic field. A series of compression triaxial tests were carried out with various relative densities of specimens (60% and 80%), in four electromagnetic fields (0 A, 0.5 A, 1 A, and 2 A) and under three confining pressures (103 kPa, 206 kPa, and 310 kPa). The test results indicate that the strength of specimens increased while initial stiffness and brittleness reduced by adding iron powder. Moreover, the strength of the specimens increased by increasing the magnitude of the applied electromagnetic field. The behavior of the iron-powdered sand was described by using a revised Duncan–Chang model. The revised model was evaluated by comparing the simulated results with the corresponding test data. The comparison showed that the revised model can better capture the nonlinear stress-strain behavior of the specimens. With the application of the revised Duncan–Chang model, the standard error of the estimate between the experimental and predicted results is lowered down to 0.39 from 4.7. Future research is geared towards practical applications for temporary solidification of soil. |
| format | Article |
| id | doaj-art-54418bc70d6b48ac8641bac279de594e |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-54418bc70d6b48ac8641bac279de594e2025-02-03T05:47:15ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/32812693281269Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic FieldYing Lai0Bin Zhu1Xiangtian Xu2Postdoctoral Fellow, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, ChinaProfessor, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, ChinaProfessor, MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, College of Civil Engineering and Architecture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, ChinaApplications of soil improvement have proliferated in recent years. To date, we have limited studies on the quantitative analyses of the autoadaptive material and specifically to model its stress-strain relationship. This paper explored an autoadaptive material, iron-powdered Ottawa sand, which was temporarily solidified by applying an electromagnetic field. A series of compression triaxial tests were carried out with various relative densities of specimens (60% and 80%), in four electromagnetic fields (0 A, 0.5 A, 1 A, and 2 A) and under three confining pressures (103 kPa, 206 kPa, and 310 kPa). The test results indicate that the strength of specimens increased while initial stiffness and brittleness reduced by adding iron powder. Moreover, the strength of the specimens increased by increasing the magnitude of the applied electromagnetic field. The behavior of the iron-powdered sand was described by using a revised Duncan–Chang model. The revised model was evaluated by comparing the simulated results with the corresponding test data. The comparison showed that the revised model can better capture the nonlinear stress-strain behavior of the specimens. With the application of the revised Duncan–Chang model, the standard error of the estimate between the experimental and predicted results is lowered down to 0.39 from 4.7. Future research is geared towards practical applications for temporary solidification of soil.http://dx.doi.org/10.1155/2018/3281269 |
| spellingShingle | Ying Lai Bin Zhu Xiangtian Xu Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic Field Advances in Materials Science and Engineering |
| title | Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic Field |
| title_full | Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic Field |
| title_fullStr | Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic Field |
| title_full_unstemmed | Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic Field |
| title_short | Experimental Investigation on the Behavior of Iron Powder-Reinforced Sand under Electromagnetic Field |
| title_sort | experimental investigation on the behavior of iron powder reinforced sand under electromagnetic field |
| url | http://dx.doi.org/10.1155/2018/3281269 |
| work_keys_str_mv | AT yinglai experimentalinvestigationonthebehaviorofironpowderreinforcedsandunderelectromagneticfield AT binzhu experimentalinvestigationonthebehaviorofironpowderreinforcedsandunderelectromagneticfield AT xiangtianxu experimentalinvestigationonthebehaviorofironpowderreinforcedsandunderelectromagneticfield |