Mechanical Behavior of Cemented Sand Reinforced with Different Polymer Fibers
In this study, the specimens of cemented sand were prepared by reinforcing it separately with different contents (0.5%, 1.0%, 1.5%, and 2.0%) of three different polymer fibers (polyamide, polyester, and polypropylene) prepared as filaments of different lengths (6, 9, and 12 mm). Then, these specimen...
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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/10.1155/2019/8649619 |
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| author | Xiangfeng Lv Xiaohui Yang Hongyuan Zhou Shuo Zhang |
| author_facet | Xiangfeng Lv Xiaohui Yang Hongyuan Zhou Shuo Zhang |
| author_sort | Xiangfeng Lv |
| collection | DOAJ |
| description | In this study, the specimens of cemented sand were prepared by reinforcing it separately with different contents (0.5%, 1.0%, 1.5%, and 2.0%) of three different polymer fibers (polyamide, polyester, and polypropylene) prepared as filaments of different lengths (6, 9, and 12 mm). Then, these specimens were tested, and the improvement effects of the three fibers on the engineering-mechanical behavior of the cemented sand were analyzed and compared. The different microstructures and chemical compositions of the fiber-reinforced cemented sand specimens were investigated using electron microscopy and X-ray diffraction. Compression tests were performed to obtain the stress-strain curves of the specimens. Comparative analysis was performed on the variation patterns of the mechanical parameters (such as unconfined compressive strength and peak strain) of the specimens. Quantitative analysis was performed on the effect of fiber content and fiber filament length on the failure mode of the specimens. It was shown that the inclusion of fibers led to a change from brittle failure to ductile failure. The macro- and microexperimental results revealed that polypropylene fiber had the best improvement effect on the mechanical behavior of the cemented sand, followed by polyester fiber and polyamide fiber. In particular, the cemented sand specimen reinforced with 1.5% polypropylene fiber prepared as 9 mm length filaments had a brittleness index of 0.0578, exhibited ductile failure (in contrast to the brittle failure of the nonreinforced cemented sand), and yielded the highest unconfined compressive strength and shear strength among the specimens. |
| format | Article |
| id | doaj-art-230616158d464f9d9a031487526a7556 |
| 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-230616158d464f9d9a031487526a75562025-02-03T05:46:37ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/86496198649619Mechanical Behavior of Cemented Sand Reinforced with Different Polymer FibersXiangfeng Lv0Xiaohui Yang1Hongyuan Zhou2Shuo Zhang3School of Civil and Resource Engineering, University of Science & Technology Beijing, Beijing 100083, ChinaGeotechnical Engineering Research Center, Institute of Municipal Engineering, Beijing 100037, ChinaGeotechnical Engineering Research Center, Institute of Municipal Engineering, Beijing 100037, ChinaGeotechnical Engineering Research Center, Institute of Municipal Engineering, Beijing 100037, ChinaIn this study, the specimens of cemented sand were prepared by reinforcing it separately with different contents (0.5%, 1.0%, 1.5%, and 2.0%) of three different polymer fibers (polyamide, polyester, and polypropylene) prepared as filaments of different lengths (6, 9, and 12 mm). Then, these specimens were tested, and the improvement effects of the three fibers on the engineering-mechanical behavior of the cemented sand were analyzed and compared. The different microstructures and chemical compositions of the fiber-reinforced cemented sand specimens were investigated using electron microscopy and X-ray diffraction. Compression tests were performed to obtain the stress-strain curves of the specimens. Comparative analysis was performed on the variation patterns of the mechanical parameters (such as unconfined compressive strength and peak strain) of the specimens. Quantitative analysis was performed on the effect of fiber content and fiber filament length on the failure mode of the specimens. It was shown that the inclusion of fibers led to a change from brittle failure to ductile failure. The macro- and microexperimental results revealed that polypropylene fiber had the best improvement effect on the mechanical behavior of the cemented sand, followed by polyester fiber and polyamide fiber. In particular, the cemented sand specimen reinforced with 1.5% polypropylene fiber prepared as 9 mm length filaments had a brittleness index of 0.0578, exhibited ductile failure (in contrast to the brittle failure of the nonreinforced cemented sand), and yielded the highest unconfined compressive strength and shear strength among the specimens.http://dx.doi.org/10.1155/2019/8649619 |
| spellingShingle | Xiangfeng Lv Xiaohui Yang Hongyuan Zhou Shuo Zhang Mechanical Behavior of Cemented Sand Reinforced with Different Polymer Fibers Advances in Materials Science and Engineering |
| title | Mechanical Behavior of Cemented Sand Reinforced with Different Polymer Fibers |
| title_full | Mechanical Behavior of Cemented Sand Reinforced with Different Polymer Fibers |
| title_fullStr | Mechanical Behavior of Cemented Sand Reinforced with Different Polymer Fibers |
| title_full_unstemmed | Mechanical Behavior of Cemented Sand Reinforced with Different Polymer Fibers |
| title_short | Mechanical Behavior of Cemented Sand Reinforced with Different Polymer Fibers |
| title_sort | mechanical behavior of cemented sand reinforced with different polymer fibers |
| url | http://dx.doi.org/10.1155/2019/8649619 |
| work_keys_str_mv | AT xiangfenglv mechanicalbehaviorofcementedsandreinforcedwithdifferentpolymerfibers AT xiaohuiyang mechanicalbehaviorofcementedsandreinforcedwithdifferentpolymerfibers AT hongyuanzhou mechanicalbehaviorofcementedsandreinforcedwithdifferentpolymerfibers AT shuozhang mechanicalbehaviorofcementedsandreinforcedwithdifferentpolymerfibers |