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Possibilities of Reinforcement of Two-Layer External Brick Masonry with Composite Mesh

Number of journal: 9-2019
Autors:

Begunova N.V.
Vozmischev V.N.

DOI: https://doi.org/10.31659/0585-430X-2019-774-9-38-41
УДК: 693.25

 

АннотацияОб авторахСписок литературы
Possibilities to reinforce the two-layer brick masonry with composite meshes are considered. According to the normative document, when heating degree-days is over 2000°C-day/deg., external brick walls are used as two-layered or three-layered. The use of external three-layer walls with effective insulation with a face layer of masonry of 120 mm thickness is limited for buildings with a service life over 50 years, but the recommended service life of buildings and structures of mass construction under the normal conditions of operation is not less than 50 years. A variant of the construction of two-layer walls under these conditions is the external facing layer of brick masonry and the inner layer of cellular concrete when the external and inner layers of masonry must be connected by flexible connections of steel reinforcement, composite mesh. When the rows of the inner and outer layers of masonry in the location of the ties don’t match more than 5 mm, it is allowed to use the flexible connections mounted in the thickness of the stones of the main masonry layer. The use of composite mesh restrains the mismatch of the rows of the inner and outer layers of masonry. The thickness of the composite mesh is 3.6–4 mm, which makes it possible to use it when making the masonry of blocks of cellular concrete on glue, the coefficient of thermal conductivity of which is 25% less than the coefficient of thermal conductivity of the masonry of blocks on cement-sand mortar. The thermal conductivity coefficient of composite mesh is more than 100 times lower than that of steel mesh.
N.V. BEGUNOVA1, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
V.N. VOZMISCHEV2, Engineer, Deputy General Director (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)
2 “KomAR” LLC (427966, Sarapul, Gogolya Street, 40)

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Для цитирования: Begunova N.V., Vozmischev V.N. Possibilities of reinforcement of two-layer external brick masonry with composite mesh. Stroitel’nye Materialy [Construction Materials]. 2019. No. 9, pp. 38–41. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2019-774-9-38-41


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