ВЛИЯНИЕ ЦИКЛИЧЕСКОГО ЗАМОРАЖИВАНИЯ И ОТТАИВАНИЯ НА ДИАГРАММУ ДЕФОРМИРОВАНИЯ СЖАТОГО БЕТОНА

Abstract

Deformation models of materials are widely used in the calculation of reinforced concrete structures. At the same time, concrete compression diagrams are used, taking into account the descending branch. The analytical description of the concrete work diagram is associated with the determination of such concrete parameters as the initial modulus of elasticity; prismatic strength; extreme compression deformations at the top of the diagram; the value of deformations on the descending branch at 85% of the prismatic strength. The influence of alternating temperatures on reinforced concrete structures of buildings and structures leads to the development of destructive processes in concrete. At the same time, the question of the effect of cyclic freezing and thawing on the complete diagrams of concrete, including the ultimate compression deformations, remains poorly investigated. The determining factor affecting the deformation and strength properties of concrete under freezing and thawing conditions is its humidity. In this regard, studies have been conducted on the effect of cyclic freezing and thawing on the diagrams of the state of concrete of various humidity, the results of which are presented in this paper.