Evaluation of the Temperature Impact on the Stress State of Protective and Decorative Coatings Taking into Account the Porosity of the Cement Substrate

VI Loganina*, MV Ariskin and MA Svetalkina

The object of research is the stress-strain state of protective and decorative coatings of external enclosing structures. The purpose of the research is to evaluate the stress-strain state of protective and decorative coatings under the action of temperature, depending on the porosity of the substrate, the thickness of the coating. The article presents the results of the calculation of stresses depending on the thickness of the paint coating, the size of the pores in the contact zone “coating-substrate”. The SCAD Office software module was used to assess the stress state of the coatings. A comparison is made of the stresses in the coating when pores of different radii are filled with a paint composition and in the absence of pore filling. It has been established that under the action of an alternating temperature in the coatings, a change in the deformed state occurs, characterized by alternation of compressive and tensile stresses. The magnitude of internal stresses decreases with decreasing coating thickness. With a decrease in the radius of the pores filled with the ink composition, the stresses in the zone of contact between the coating and the substrate decrease, and in the center of the pore filled with the ink composition, they increase. As the pore radius decreases, the difference between the stress values ​​on the coating surface and in the zone of contact between the coating and the substrate decreases. There is a change of signs of stress in the zone of contact between the coating and the substrate, and in the center of the pore filled with the ink composition. Recommendations are given for choosing the type of paint. 

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Published on: Nov 4, 2025 Pages: 65-69

Full Text PDF Full Text HTML DOI: 10.17352/jcees.000096
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