Safe functioning of the product as a function of the structural variety of concrete
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2018, Vol 1, Issue 71
Abstract
The purpose of the work is to increase resistance of concrete during the operation of building products in conditions of repeated freezing-thawing and wetting-drying. An important property of concrete is its ability to adapt to the periodical effect of external factors by self-organization of the structure. This implies the presence in the material of active elements capable of changing their parameters adequately to impacts. Such elements are cracks and inner surfaces of a partition as integral elements of the structure of any material. The sets of active elements provide timely structural changes and determine the change dynamics of concrete damage during the operation of the product. It is possible to receive these sets by directing the structural organization of concrete. The operating factor of the structure formation can be a change in the ratio of adhesion and cohesive binding forces at the interface between the matrix material and the surface of the fillers. Concrete whose structure was initiated by selective adhesion of a matrix to the surface of fillers had higher values of properties. The variety of the initial conditions of interfacial interactions provided increase of concrete strength to 26%, expanded clay lightweight concrete strength to 10% and modulus of elasticity to 12-21% at reduction of total porosity by 18% and water absorption by 8-14%. The structural potential ensured the resistance of concrete to freezing-thawing and wetting-drying. Sets of active elements of concrete structure are the factors of safe functioning of building products in conditions of influence of the operating environment.
Authors and Affiliations
O. A. , Korobko, Yu. O. , Zakorchemny, А. M. , Kushnir, O. N. , Kotsiurubenko
Keywords
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- EP ID EP510826
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