Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique
Acoustic emission (AE) technology is widely used in structural health monitoring. Glass sand (GS) made from waste glass is a promising replacement aggregate for quartz sand (QS) in ultra-high performance concrete (UHPC). This paper addresses the effects of different factors including water-binder ra...
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MDPI AG
2021-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/16/4608 |
| _version_ | 1797523078389956608 |
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| author | Xianqiang Wang Duo Liu Yao Zhang Yubo Jiao |
| author_facet | Xianqiang Wang Duo Liu Yao Zhang Yubo Jiao |
| author_sort | Xianqiang Wang |
| collection | DOAJ |
| description | Acoustic emission (AE) technology is widely used in structural health monitoring. Glass sand (GS) made from waste glass is a promising replacement aggregate for quartz sand (QS) in ultra-high performance concrete (UHPC). This paper addresses the effects of different factors including water-binder ratio, length of basalt fiber (BF) and ratio of GS replacing QS on the fluidity and flexural strength of UHPC notched beam under four-point flexural loads. Meanwhile, the fracture characteristics of UHPC notched beam were characterized through acoustic emission (AE) technique. The results show that water-binder ratio and replacement ratio of GS present a positive correlation with work performance of UHPC, while length of BF exhibits a negative one. The flexural strength of UHPC notched beams can be improved by the decrease of the water-binder ratio and fiber length. The effect of water-binder ratio on flexural strength is the most significant, while the addition of GS presents the minimum one. The fracture characteristics of UHPC notched beams could be favorably characterized by AE parameters. Through the analysis and comparison of the evolution of AE parameters, the differences in fracture properties of UHPC notched beams with different flexural strengths can be realized. Through this study, the fluidity and flexural performance of UHPC produced by replacing QS with GS were demonstrated, which is beneficial to the cleaner production of UHPC. Meanwhile, the AE technique presented great potential for fracture characterization of UHPC notched beam, which also provided a promising method for real-time monitoring of cracking in the diagnosis of UHPC structures. |
| first_indexed | 2024-03-10T08:38:21Z |
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| id | doaj.art-a94b4f6e82914fed8d32b27357853c0e |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T08:38:21Z |
| publishDate | 2021-08-01 |
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| series | Materials |
| spelling | doaj.art-a94b4f6e82914fed8d32b27357853c0e2023-11-22T08:30:04ZengMDPI AGMaterials1996-19442021-08-011416460810.3390/ma14164608Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission TechniqueXianqiang Wang0Duo Liu1Yao Zhang2Yubo Jiao3The State Key Laboratory on Safety and Health of In-Service Long-Span Bridges, Institute of Transportation Science, JSTI Group, Nanjing 211112, ChinaThe State Key Laboratory on Safety and Health of In-Service Long-Span Bridges, Institute of Transportation Science, JSTI Group, Nanjing 211112, ChinaKey Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, ChinaAcoustic emission (AE) technology is widely used in structural health monitoring. Glass sand (GS) made from waste glass is a promising replacement aggregate for quartz sand (QS) in ultra-high performance concrete (UHPC). This paper addresses the effects of different factors including water-binder ratio, length of basalt fiber (BF) and ratio of GS replacing QS on the fluidity and flexural strength of UHPC notched beam under four-point flexural loads. Meanwhile, the fracture characteristics of UHPC notched beam were characterized through acoustic emission (AE) technique. The results show that water-binder ratio and replacement ratio of GS present a positive correlation with work performance of UHPC, while length of BF exhibits a negative one. The flexural strength of UHPC notched beams can be improved by the decrease of the water-binder ratio and fiber length. The effect of water-binder ratio on flexural strength is the most significant, while the addition of GS presents the minimum one. The fracture characteristics of UHPC notched beams could be favorably characterized by AE parameters. Through the analysis and comparison of the evolution of AE parameters, the differences in fracture properties of UHPC notched beams with different flexural strengths can be realized. Through this study, the fluidity and flexural performance of UHPC produced by replacing QS with GS were demonstrated, which is beneficial to the cleaner production of UHPC. Meanwhile, the AE technique presented great potential for fracture characterization of UHPC notched beam, which also provided a promising method for real-time monitoring of cracking in the diagnosis of UHPC structures.https://www.mdpi.com/1996-1944/14/16/4608UHPCnotched beamfracture characterizationAEmaterial factor influence |
| spellingShingle | Xianqiang Wang Duo Liu Yao Zhang Yubo Jiao Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique Materials UHPC notched beam fracture characterization AE material factor influence |
| title | Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique |
| title_full | Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique |
| title_fullStr | Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique |
| title_full_unstemmed | Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique |
| title_short | Fracture Characterization of Ultra-High Performance Concrete Notched Beams under the Influence of Different Material Factors Based on Acoustic Emission Technique |
| title_sort | fracture characterization of ultra high performance concrete notched beams under the influence of different material factors based on acoustic emission technique |
| topic | UHPC notched beam fracture characterization AE material factor influence |
| url | https://www.mdpi.com/1996-1944/14/16/4608 |
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