Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

Version 1 : Received: 20 July 2021 / Approved: 23 July 2021 / Online: 23 July 2021 (11:02:54 CEST)

A peer-reviewed article of this Preprint also exists.

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. 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.

Journal reference: Sensors 2021, 21, 5652
DOI: 10.3390/s21165652

Abstract

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 measures, 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 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.

Keywords

concrete protection; infrared detection; image processing; cluster analysis; uniformity evaluation

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