Study on Acoustic Emission Characteristics and Instability Evolution Processes of Concrete Under Axial Compression

YANG Yahan; YU Zeming; LI Cantian; ZHU Chengfa; WANG Bingshu; ZHANG Chunhui; YU Zhibing; OUYANG Wei; ZHANG Xinwei

doi:10.3724/j.gyjzG24010402

Volume 54 Issue 2

Feb. 2024

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2024 > 54(2): 161-166

YANG Yahan, YU Zeming, LI Cantian, ZHU Chengfa, WANG Bingshu, ZHANG Chunhui, YU Zhibing, OUYANG Wei, ZHANG Xinwei. Study on Acoustic Emission Characteristics and Instability Evolution Processes of Concrete Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(2): 161-166. doi: 10.3724/j.gyjzG24010402

Citation:

YANG Yahan, YU Zeming, LI Cantian, ZHU Chengfa, WANG Bingshu, ZHANG Chunhui, YU Zhibing, OUYANG Wei, ZHANG Xinwei. Study on Acoustic Emission Characteristics and Instability Evolution Processes of Concrete Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(2): 161-166. doi: 10.3724/j.gyjzG24010402

Citation:

YANG Yahan, YU Zeming, LI Cantian, ZHU Chengfa, WANG Bingshu, ZHANG Chunhui, YU Zhibing, OUYANG Wei, ZHANG Xinwei. Study on Acoustic Emission Characteristics and Instability Evolution Processes of Concrete Under Axial Compression[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(2): 161-166. doi: 10.3724/j.gyjzG24010402

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Study on Acoustic Emission Characteristics and Instability Evolution Processes of Concrete Under Axial Compression

doi: 10.3724/j.gyjzG24010402

1. University of Science and Technology Beijing, Beijing 100083, China;
2. Beijing Building Materials Testing Academy Co. Ltd., Beijing 100041, China;
3. Beijing Building Materials Academy of Sciences Research, Beijing 100041, China;
4. North China University of Water Resources and Electric Power, Zhengzhou 450045, China;
5. Hebei University of Science and Technology, Shijiazhuang 050018, China;
6. Sichuan Transportation Construction Group Co., Ltd., Chengdu 610047, China;
7. Power China Road Bridge Group Co., Ltd., Beijing 100044, China;
8. CSCEC Road and Bridge Group Co. Ltd., Shijiazhuang 050000, China

Received Date: 2024-01-04
Available Online: 2024-04-23

Abstract

Abstract

The concrete of bridge pile foundations always bear excessive axial loads, and accompanying with its internal failure and crack process, elastic waves will be emitted. In order to quantify the characteristics of the entire instability evolution process of concrete, the temporal and spatial evolution characteristics of acoustic emission in the whole loading process of concrete specimens drilled in situ from bridge pile foundation structures were studied and synchronous monitoring tests of axial compression and acoustic emission were conducted. The relation between the whole process of compressive instability and the acoustic emission ringing counts, energy release, focal locations and other characterization parameters were analyzed. Then, a quantitative description of the correlation between the loading process and acoustic emission characteristics was obtained, and its instability evolution process was analyzed. The results indicated that the stress of concrete specimens under axial compression was consistent with the change law of the acoustic emission ringing counts and energy release with times, and the acoustic emission positioning points mainly located in a macro "positioning zone" in the shear stress concentration area, which was consistent with the development and failure of concrete cracks. The loading stage of concrete could be quantitatively judged according to activity of acoustic emission, which could reflected the critical characteristics of concrete instability, and was of great significance to service monitoring of pile foundation concrete.
- pile foundation concrete,
- acoustic emission characteristic,
- ringing count,
- energy,
- instability evolution process

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References(18)

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