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Article

Evaluation of the Uniformity of Protective Coatings on Concrete Structure Surfaces Based on Cluster Analysis

School of Resources and Safety Engineering, Central South University, Changsha 410083, China
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Author to whom correspondence should be addressed.
Academic Editor: Stefano Sfarra
Sensors 2021, 21(16), 5652; https://doi.org/10.3390/s21165652
Received: 20 July 2021 / Revised: 14 August 2021 / Accepted: 17 August 2021 / Published: 22 August 2021
(This article belongs to the Special Issue Infrared Sensor Technologies and Applications)
With the continuous development of urbanization and industrialization in the world, concrete is widely used in various engineering constructions as an engineering material. However, the consequent problem of durability of concrete structures is also becoming increasingly prominent. As an important additional measure, a protective coating can effectively improve the durability of concrete performance. Moreover, the uniformity of the concrete surface coating will directly affect its protective effect. Therefore, we propose a nondestructive inspection and evaluation method of coating uniformity based on infrared imaging and cluster analysis for concrete surface coating uniformity detection and evaluation. Based on the obtained infrared images, a series of processing and analysis of the images were carried out using MATLAB software to obtain the characteristics of the infrared images of the concrete surface. Finally, by extracting the temperature distribution data of the pixel points on the concrete surface, an evaluation method of concrete surface coating uniformity based on a combination of cluster analysis and hierarchical analysis was established. The evaluation results show that the determination results obtained by this method are consistent with the actual situation. This study has a positive contribution to the testing of concrete surface coating uniformity and its evaluation. View Full-Text
Keywords: concrete protection; infrared detection; image processing; cluster analysis; uniformity evaluation concrete protection; infrared detection; image processing; cluster analysis; uniformity evaluation
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MDPI and ACS Style

Liu, D.; Zhang, W.; Tang, Y.; Jian, Y.; Gong, C.; Qiu, F. Evaluation of the Uniformity of Protective Coatings on Concrete Structure Surfaces Based on Cluster Analysis. Sensors 2021, 21, 5652. https://doi.org/10.3390/s21165652

AMA Style

Liu D, Zhang W, Tang Y, Jian Y, Gong C, Qiu F. Evaluation of the Uniformity of Protective Coatings on Concrete Structure Surfaces Based on Cluster Analysis. Sensors. 2021; 21(16):5652. https://doi.org/10.3390/s21165652

Chicago/Turabian Style

Liu, Dunwen, Wanmao Zhang, Yu Tang, Yinghua Jian, Chun Gong, and Fengkai Qiu. 2021. "Evaluation of the Uniformity of Protective Coatings on Concrete Structure Surfaces Based on Cluster Analysis" Sensors 21, no. 16: 5652. https://doi.org/10.3390/s21165652

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