THE INFLUENCE OF HETEROGENEOUS MEDIUM MICROSCOPIC PROPERTIES ON PREDICTING MACROSCOPIC PROPERTIES OF MASONRY
Authors:   National University ", Usenko Dmytro ,   Yuri Kondratyuk Poltava Polytechnic", Usenko Iryna ,   National University "Yuri Kondratyuk Poltava Polytechnic", Soloviev Veniamin ,   National University "Yuri Kondratyuk Poltava Polytechnic"
Published: June 2024

The key aspects of the microscopic description of structurally inhomogeneous media are considered. This makes it possible to evaluate the macroscopic properties of stochastic multicomponent materials using statistical methods and distribution functions of local effective indicators and is important for predicting the behavior of structurally heterogeneous building materials under various conditions. It also allows us to develop new approaches to the creation and use of new materials in the future and their optimization for various applications. Studies of macroscopic and microscopic aspects of dislocations and strains in brick and mortar are described. The influence of these phenomena on the mechanical properties and strength of building structures made of masonry has been studied. Two main types of dislocations are considered - edge and screw, as well as the relationship with macroscopic deformations of the structure of stone materials. Using elasticity theory and brittle fracture mechanics, the mechanical behavior of masonry structures under different loading conditions is analyzed to establish the relationship between stress, strain and strength of masonry. Various ways of calculating the strength of elements and structures are also considered, taking into account the macroscopic and microscopic aspects of dislocations and deformations, and it is proposed to use the results obtained to predict the behavior of masonry structures as a result of the application of a load. The results of the study of the mechanism of dislocation propagation in masonry at the microscopic level are important research in the field of industrial and civil engineering. This will help to better understand the interaction of materials under external loading and optimize masonry installation processes to improve its strength and durability. Research and development in the construction and civil engineering industry is improving the design and efficiency of stone materials. Microscopic and macroscopic aspects of dislocations and deformations in masonry play an important role in increasing the strength and understanding the mechanical properties of building structures. The characteristic dimensions of the component sections of the masonry should be much larger than the molecular kinetic dimensions, but, at the same time, much smaller than the distances at which the averaged state parameters change noticeably. The main aspects of the influence of the microscopic properties of a heterogeneous medium on predicting the macroscopic properties of masonry are considered. Important for understanding and predicting the behavior of structurally inhomogeneous materials under different conditions is the assessment of the macroscopic properties of stochastic multicomponent materials using statistical methods and distribution functions of local effective indicators. Taking this into account makes it possible to develop new approaches to the design and optimization of building materials for various applications. Research into the mechanism of dislocation propagation in masonry provides valuable scientific basis for the development of more efficient installation methods and improved strength properties. This is an important contribution to the construction industry, helping to create stronger, more resilient and longer-lasting building structures. The propagation of dislocations is significantly influenced by the cementitious material, laying methods, and the shape and geometry of masonry elements. The optimization of these factors will reduce the risk of damage and improve the strength characteristics of structures, and, as a result, will lead to the creation of more effective methods for constructing and strengthening buildings and structures. The results described in this monograph allow the development of new materials with improved deformability and load adaptation. This may include the use of composite materials or modification of bonding materials to improve their strength properties. An important aspect is the development of methods for monitoring and diagnosing the condition of masonry. New methods based on the study of dislocations will make it possible to quickly identify damage and take measures to prevent or repair it, which contributes to the safety and stability of buildings.