Assessment of the Quality of Cement Concrete Roads by X-ray Diffractometric and Chemical Analysis

This article discusses the issue of the quality of cement concrete roads, which is important in ensuring the durability and reliability of road surfaces. The main attention is paid to the analysis of common defects, such as cracks and peeling, using the example of the Almaty-Khorgos road section. These defects can significantly impair the performance of the coating, reduce traffic safety and increase road maintenance costs. The article describes the application of X-ray diffractometric and chemical analysis for a detailed study of the mineral composition and chemical characteristics of cement-concrete mixtures. According to the results of X-ray diffractometric and chemical analysis, free lime was found in all samples taken at the studied sites. This indicates an accelerated process of concrete hydration, which can lead to a number of negative consequences. The research presented in the article confirms the hypothesis about the effect of portlantide on increasing the strength of concrete by increasing internal stress. The presence of many microcracks on the surface of the concrete coating confirms this assumption. The data obtained make it possible to identify the main factors affecting the durability of the coating and propose effective measures to prevent the formation of cement concrete defects during installation and operation.