Flexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced Concrete
Abstract The flexural behavior of basalt fiber (BF)/polypropylene fiber (PF)-reinforced concrete (BPRC) was investigated. When the content of BF and PF is 0.1%, the addition of fibers increases the compressive strength of concrete. A BF content of 0.1% has the most obvious effect on improving the co...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-06-01
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| Series: | International Journal of Concrete Structures and Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40069-022-00524-w |
| _version_ | 1811229953396572160 |
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| author | Qiang Fu Zhaorui Zhang Wenrui Xu Xu Zhao Lu Zhang Yan Wang Ditao Niu |
| author_facet | Qiang Fu Zhaorui Zhang Wenrui Xu Xu Zhao Lu Zhang Yan Wang Ditao Niu |
| author_sort | Qiang Fu |
| collection | DOAJ |
| description | Abstract The flexural behavior of basalt fiber (BF)/polypropylene fiber (PF)-reinforced concrete (BPRC) was investigated. When the content of BF and PF is 0.1%, the addition of fibers increases the compressive strength of concrete. A BF content of 0.1% has the most obvious effect on improving the compressive strength, but a hybrid fiber content of 0.2% exhibits a negative effect on the compressive strength. The addition of BF and PF can increase the flexural strength and the expansion tortuosity of the fracture cracks, thus enhancing the ductility of concrete. The hybrid fibers with content of 0.1% are most beneficial to increase the flexural strength. However, the ductility of concrete and the tortuosity of fracture crack decrease with the matrix strength, and the improvement proportion of fibers on the flexural strength also decreases. When the BF and PF are mixed, compared to the case of single fiber added, there is no significant change in the damage of BF, whereas the damage of PF is more severe. The flexural toughness index FTδ effectively characterizes the change in the flexural toughness of BPRC. The hybrid fiber contents of 0.1% and 0.2% exhibit the most significant improving effect on FT-l/600 and FT-l/150, respectively. Considering the influence of fibers on the compressive strength, flexural strength and flexural toughness of concrete, a hybrid content of 0.1% is the optimal choice of fiber content. A prediction model for flexural strength of BPRC is proposed based on the composite material theory. |
| first_indexed | 2024-04-12T10:21:58Z |
| format | Article |
| id | doaj.art-cf21573ca0494b55b60c979a3ae17082 |
| institution | Directory Open Access Journal |
| issn | 1976-0485 2234-1315 |
| language | English |
| last_indexed | 2024-04-12T10:21:58Z |
| publishDate | 2022-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Concrete Structures and Materials |
| spelling | doaj.art-cf21573ca0494b55b60c979a3ae170822022-12-22T03:37:04ZengSpringerOpenInternational Journal of Concrete Structures and Materials1976-04852234-13152022-06-0116111610.1186/s40069-022-00524-wFlexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced ConcreteQiang Fu0Zhaorui Zhang1Wenrui Xu2Xu Zhao3Lu Zhang4Yan Wang5Ditao Niu6School of Civil Engineering, Xi’an University of Architecture and TechnologySchool of Civil Engineering, Xi’an University of Architecture and TechnologySchool of Civil Engineering, Xi’an University of Architecture and TechnologySchool of Civil Engineering, Xi’an University of Architecture and TechnologySchool of Civil Engineering, Xi’an University of Architecture and TechnologyCollege of Materials Science and Engineering, Xi′an University of Architecture and TechnologySchool of Civil Engineering, Xi’an University of Architecture and TechnologyAbstract The flexural behavior of basalt fiber (BF)/polypropylene fiber (PF)-reinforced concrete (BPRC) was investigated. When the content of BF and PF is 0.1%, the addition of fibers increases the compressive strength of concrete. A BF content of 0.1% has the most obvious effect on improving the compressive strength, but a hybrid fiber content of 0.2% exhibits a negative effect on the compressive strength. The addition of BF and PF can increase the flexural strength and the expansion tortuosity of the fracture cracks, thus enhancing the ductility of concrete. The hybrid fibers with content of 0.1% are most beneficial to increase the flexural strength. However, the ductility of concrete and the tortuosity of fracture crack decrease with the matrix strength, and the improvement proportion of fibers on the flexural strength also decreases. When the BF and PF are mixed, compared to the case of single fiber added, there is no significant change in the damage of BF, whereas the damage of PF is more severe. The flexural toughness index FTδ effectively characterizes the change in the flexural toughness of BPRC. The hybrid fiber contents of 0.1% and 0.2% exhibit the most significant improving effect on FT-l/600 and FT-l/150, respectively. Considering the influence of fibers on the compressive strength, flexural strength and flexural toughness of concrete, a hybrid content of 0.1% is the optimal choice of fiber content. A prediction model for flexural strength of BPRC is proposed based on the composite material theory.https://doi.org/10.1186/s40069-022-00524-wfibermatrix strengthflexural toughnessprediction model |
| spellingShingle | Qiang Fu Zhaorui Zhang Wenrui Xu Xu Zhao Lu Zhang Yan Wang Ditao Niu Flexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced Concrete International Journal of Concrete Structures and Materials fiber matrix strength flexural toughness prediction model |
| title | Flexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced Concrete |
| title_full | Flexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced Concrete |
| title_fullStr | Flexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced Concrete |
| title_full_unstemmed | Flexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced Concrete |
| title_short | Flexural Behavior and Prediction Model of Basalt Fiber/Polypropylene Fiber-Reinforced Concrete |
| title_sort | flexural behavior and prediction model of basalt fiber polypropylene fiber reinforced concrete |
| topic | fiber matrix strength flexural toughness prediction model |
| url | https://doi.org/10.1186/s40069-022-00524-w |
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