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Small-Scale Void-Size Determination in Reinforced Concrete Using GPR
Joint Authors
Yang, Yong
Lu, Junwei
Li, Rongzhe
Zhao, Weigang
Yan, Deli
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-06-06
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The detection and evaluation of void in concrete are imperative issues in health monitoring of civil engineering.
However, the void is difficult to be detected at its early stage of formation on account of its small scale and concealment.
Although, in view of the remarkable performance such as precision and continuity, ground penetrating radar (GPR) is widely employed in some special fields of nondestructive testing, the strong reflection of rebar which could submerge the echo of void is now a stumbling block for the application of GPR in reinforced concrete.
In order to develop the tactic of small-scale void-size determination with considerable noise originated from rebar, a two-stage regression method is proposed in this study.
First, a superposition model of target echoes was established to analyze the relationship between the space-time distribution and spectrum of the rebar echo and the void echo, and a curvelet transform was employed to reduce the strong reflection of the rebar.
Then, the echo amplitude of small-scale void was investigated, and a regression method was put forward to determine the void size of small scale.
Finally, forward simulation and experiment were carried out to verify the feasibility of the proposed method.
Results demonstrated that the spectral distribution of the rebar echo is significantly higher than that of the void echo.
The curvelet-based low-pass filter can effectively ensure the discrimination of void echo.
The regression method performs a high-accuracy void-size determination with more than 90% in small scale.
American Psychological Association (APA)
Yang, Yong& Lu, Junwei& Li, Rongzhe& Zhao, Weigang& Yan, Deli. 2020. Small-Scale Void-Size Determination in Reinforced Concrete Using GPR. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121173
Modern Language Association (MLA)
Yang, Yong…[et al.]. Small-Scale Void-Size Determination in Reinforced Concrete Using GPR. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1121173
American Medical Association (AMA)
Yang, Yong& Lu, Junwei& Li, Rongzhe& Zhao, Weigang& Yan, Deli. Small-Scale Void-Size Determination in Reinforced Concrete Using GPR. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1121173
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121173