Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed Tomography
Polypropylene fiber-reinforced concrete (PFRC) is a cement-based composite material with short-cut fibers which has been utilized to provide multidimensional reinforcement and enhance toughness of concrete. However, this improvement is closely related to the microstructural morphology of the concret...
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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/10.1155/2019/2386590 |
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| author | Yu Qin Hua Wu Yong Zheng Weina Wang Zhijian Yi |
| author_facet | Yu Qin Hua Wu Yong Zheng Weina Wang Zhijian Yi |
| author_sort | Yu Qin |
| collection | DOAJ |
| description | Polypropylene fiber-reinforced concrete (PFRC) is a cement-based composite material with short-cut fibers which has been utilized to provide multidimensional reinforcement and enhance toughness of concrete. However, this improvement is closely related to the microstructural morphology of the concrete. A nondestructive technique using X-ray computed tomography (CT) was therefore used to grasp the microscopic texture of PFRC samples. The results showed that the orientation of microcracks, which appear in the interfacial transition zone, are along the surface of the coarse aggregate. The range of distribution of fibers is proportional to fiber volume fraction. The coarse aggregate influence distribution and orientation of polypropylene fibers whose shape are mainly fold line and curve. The dispersion of pores with small volume is uniform, and the distance between the pores with larger volume is short. The proportion of pores with the diameter in the range 0∼199 μm exceeds 70%, of which the sum of volume exceeds a half of total volume with the amount being about 1% of total amount. |
| format | Article |
| id | doaj-art-a210d0e7bce5436baa1f48695340848a |
| 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-a210d0e7bce5436baa1f48695340848a2025-02-03T07:24:21ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/23865902386590Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed TomographyYu Qin0Hua Wu1Yong Zheng2Weina Wang3Zhijian Yi4China Railway Eryuan Engineering Group Co. Ltd., Chongqing 400023, ChinaNuclear Industry Southwest Survey&Design Institute Co., Ltd., Chengdu 610061, ChinaGuizhou Transport Science Research Institute Co., Ltd., Guiyang 550008, ChinaSchool of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaPolypropylene fiber-reinforced concrete (PFRC) is a cement-based composite material with short-cut fibers which has been utilized to provide multidimensional reinforcement and enhance toughness of concrete. However, this improvement is closely related to the microstructural morphology of the concrete. A nondestructive technique using X-ray computed tomography (CT) was therefore used to grasp the microscopic texture of PFRC samples. The results showed that the orientation of microcracks, which appear in the interfacial transition zone, are along the surface of the coarse aggregate. The range of distribution of fibers is proportional to fiber volume fraction. The coarse aggregate influence distribution and orientation of polypropylene fibers whose shape are mainly fold line and curve. The dispersion of pores with small volume is uniform, and the distance between the pores with larger volume is short. The proportion of pores with the diameter in the range 0∼199 μm exceeds 70%, of which the sum of volume exceeds a half of total volume with the amount being about 1% of total amount.http://dx.doi.org/10.1155/2019/2386590 |
| spellingShingle | Yu Qin Hua Wu Yong Zheng Weina Wang Zhijian Yi Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed Tomography Advances in Civil Engineering |
| title | Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed Tomography |
| title_full | Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed Tomography |
| title_fullStr | Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed Tomography |
| title_full_unstemmed | Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed Tomography |
| title_short | Microscopic Texture of Polypropylene Fiber-Reinforced Concrete with X-Ray Computed Tomography |
| title_sort | microscopic texture of polypropylene fiber reinforced concrete with x ray computed tomography |
| url | http://dx.doi.org/10.1155/2019/2386590 |
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