Reinforcement of concrete with composite materials.

In this study, the issues of the stress-strain state of a wall structure made of cellular concrete, reinforced with composite rods, under thermal exposure and the issues of reinforcing reinforced concrete structures with composite sheets are considered. Cellular concretes have high thermal characteristics and are widely used in construction. The main disadvantage of cellular concrete is low strength characteristics under tensile loads, so the issues of strengthening cellular concrete in tension are an important and urgent problem. One of the main advantages of using composite materials in building structures is the resistance of the composite material to corrosion. A review of theoretical and experimental works on the study of building structures on the influence of temperature loads has been carried out. For the use of multilayer composite webs, a method for determining the reduced characteristics of multilayer composite webs with different arrangements of the base of composite materials is considered. The problem is solved by the finite element method. As a result of the solution, a model of a wall panel was obtained, an approximation of a wall panel reinforced with composite materials by finite elements. Was obtained the mosaics of the deformed state of the wall panel, the shear stresses and the distribution of principal stresses were carried out. The convergence of the obtained results was checked by condensing the finite element mesh. The results obtained were compared with the available experimental studies, and their good agreement was observed. [ABSTRACT FROM AUTHOR]