Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder Concrete
In this paper, the steel bar was used to prepare steel bar reactive powder concrete (SBRPC). The three-point bending test was adopted to investigate the effect of the number of steel bars on the flexural strength of SBRPC. The acoustic emission (AE) was used to monitor the fracture process of SBRPC...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/15/7017 |
| _version_ | 1797525804534464512 |
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| author | Tingyou Yi Hua Wang Juntao Xie Wensheng Wang |
| author_facet | Tingyou Yi Hua Wang Juntao Xie Wensheng Wang |
| author_sort | Tingyou Yi |
| collection | DOAJ |
| description | In this paper, the steel bar was used to prepare steel bar reactive powder concrete (SBRPC). The three-point bending test was adopted to investigate the effect of the number of steel bars on the flexural strength of SBRPC. The acoustic emission (AE) was used to monitor the fracture process of SBRPC in real time. In addition, the parameter RA and AF ratio (RF) was defined to analyze the distribution of shear cracks and tensile cracks during the fracture process. The experimental results showed that with the increases in the number of the steel bar, the flexural strength of SBRPC gradually increased. The fracture stage of SBRPC can be accurately divided according to the curve slope change in hits and cumulative counts. Moreover, the early warning of SBRPC damage can be realized by observing the amplitude of the AE amplitude value. The dynamic changes in the rising angle (RA) and average frequency (AF) values can be used to determine the cracks mode and fracture mode. Based on the results of RF analysis, adding steel bars will improve the proportion for tensile cracks during its fracture process. |
| first_indexed | 2024-03-10T09:19:09Z |
| format | Article |
| id | doaj.art-bdf37f78b8af4fb3964d70b498fa8bdb |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:19:09Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-bdf37f78b8af4fb3964d70b498fa8bdb2023-11-22T05:23:09ZengMDPI AGApplied Sciences2076-34172021-07-011115701710.3390/app11157017Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder ConcreteTingyou Yi0Hua Wang1Juntao Xie2Wensheng Wang3Department of Road and Bridge, College of Transportation, Jilin University, Changchun 130025, ChinaGuangxi Transportation Science and Technology Group Co., Ltd., Nanning 530007, ChinaCapital Construction Department, Guangxi Normal University, Guilin 541004, ChinaDepartment of Road and Bridge, College of Transportation, Jilin University, Changchun 130025, ChinaIn this paper, the steel bar was used to prepare steel bar reactive powder concrete (SBRPC). The three-point bending test was adopted to investigate the effect of the number of steel bars on the flexural strength of SBRPC. The acoustic emission (AE) was used to monitor the fracture process of SBRPC in real time. In addition, the parameter RA and AF ratio (RF) was defined to analyze the distribution of shear cracks and tensile cracks during the fracture process. The experimental results showed that with the increases in the number of the steel bar, the flexural strength of SBRPC gradually increased. The fracture stage of SBRPC can be accurately divided according to the curve slope change in hits and cumulative counts. Moreover, the early warning of SBRPC damage can be realized by observing the amplitude of the AE amplitude value. The dynamic changes in the rising angle (RA) and average frequency (AF) values can be used to determine the cracks mode and fracture mode. Based on the results of RF analysis, adding steel bars will improve the proportion for tensile cracks during its fracture process.https://www.mdpi.com/2076-3417/11/15/7017steel barreactive powder concreteflexural strengthacoustic emissionfracture behavior |
| spellingShingle | Tingyou Yi Hua Wang Juntao Xie Wensheng Wang Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder Concrete Applied Sciences steel bar reactive powder concrete flexural strength acoustic emission fracture behavior |
| title | Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder Concrete |
| title_full | Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder Concrete |
| title_fullStr | Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder Concrete |
| title_full_unstemmed | Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder Concrete |
| title_short | Flexural Strength and Acoustic Damage Characteristics of Steel Bar Reactive Powder Concrete |
| title_sort | flexural strength and acoustic damage characteristics of steel bar reactive powder concrete |
| topic | steel bar reactive powder concrete flexural strength acoustic emission fracture behavior |
| url | https://www.mdpi.com/2076-3417/11/15/7017 |
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