Building Materials and Products
DOI: http://www.dx.doi.org/10.24866/2227-6858/2020-2-13

Slavcheva G., Buimarova T.

GALINA SLAVCHEVA, Doctor of Engineering Sciences, Professor, ORCID: https://orcid.org/0000-0001-8800-2657, ResearcheID: U-4421-2018, ScopusID: 57195684636, e-mail: gslavcheva@yandex.ru
TATYANA BUIMAROVA, Postgraduate, e-mail: buimarova@mail.ru
Department of Technology of Building Materials, Products and Constructions
Voronezh State Technical University
Voronezh, Russia

Physical-climatic resistance of foam concrete based
on waste aggregates

Abstract: Results of the experimental assessment of physical and climatic resistance of cement foam concretes are presented. Basic parameters of moisture and a complex of physical and technical properties of foam concrete as a function of its moist state were evaluated. The standard methods were used for testing the concrete properties. It has been found that the non-autoclaved cement foam concrete based on non-organic waste fine aggregates meet the standard requirements to water resistance, shrinkage, frost resistance, and thermal conductivity at levels meeting the standard requirement to foam concretes of the respective density. Therefore, it can be predicted that their climatic resistance meets the mandatory requirements for materials to be used for enclosing structures. It has been established that in order to increase the climatic resistance of the cement foam concretes, their composition and structural parameters should ensure least susceptibility to moisture influences. Such prioritized parameters should include dispersion and wettability of the fine aggregates surface, and the porosity structure of the foam concrete, which is determined by the characteristics of the fine aggregate and the B/T-ratio in the foam concrete mixture.
Keywords: foam concrete, waste fine aggregate, humidity, strength, water resistance, shrinkage, frost resistance, thermal conductivity.

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