AbstractAbout AuthorsReferences
This article discusses the causes of salt appearance on the brick building facades and their influence the destruction of the ceramic bricks polymer coating in the operation of buildings. One of the reasons for the formation of efflorescence is brick’s humidity that occurs when unobstructed exposure of atmospheric moisture on masonry because of violations of construction technology of curtain walls. The absence of air gaps in the masonry, between brickwork and insulation, leads to additional moistening of walls at their operation. Discovered that mechanism of efflorescence is initiated by the mortar components. Infrared spectral analysis showed that the reason of efflorescence is sodium sulfate and calcium carbonate, which is formed from sodium oxide and calcium hydroxide. Thus, in accordance with the technical specifications for mortars sodium oxide content, for example, is limited to 0.6%.
G.I. YAKOVLEV1 , Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
G.N. PERVUSHIN1 , Doctor of Sciences (Engineering);
O. KIZIEVICH2 , Doctor-Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.);
Yu.N. GINCHITSKAYA1 , Engineer,
P.A. TAIBAKHTINA1 , Student
G.N. PERVUSHIN1 , Doctor of Sciences (Engineering);
O. KIZIEVICH2 , Doctor-Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.);
Yu.N. GINCHITSKAYA1 , Engineer,
P.A. TAIBAKHTINA1 , Student
1 Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)
2 Vilnius Gediminas Technical University (11, Saule. tekio al., LT–10223, Vilnius, Lithuania)
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2. Politaeva A.I., Eliseeva N.I., Yakovlev G.I., Pervushin G.N., Havránek Jií, Mikhailova O.Yu. Role of silica fume in formation of cement matrix structure and efflorescence in vibrocompressed products. Stroitel’nye Materialy [Construction Materials]. 2015. No. 2, pp. 49–55. (In Russian).
3. Orientlikher L.P., Loganina V.I. Zashchitno-dekorativnye pokrytiya betonnykh i kamennykh sten: Sprav. posobie [Protective and decorative coatings of concrete and stone walls: Ref. benefit]. Moscow: Stroyizdat. 1993. 120 p.
4. Inchik V.V. Salt corrosion brickwork. Stroitel’nye Materialy [Construction Materials]. 2001. No. 8, pp. 35–37. (In Russian).
5. Gorshkov V.S., Savel’ev V.G., Abakumov A.V. Vyazhushchie, keramika i steklokristalicheskie materialy: Struktura i svoistva: Spravochnoe posobie [Cementing, ceramics and glass-crystalline materials: Structure and properties: A Reference Guide]. Moscow: Stroyizdat. 1994. 584 p.
6. Flatt R.J. Salt damage in porous materials: how high supersaturations are generated. Journal Crystal Growth. 2002. Vol. 242 (3–4), pp. 435–454.
7. Bassuoni M.T., Rahman M.M. Response of concrete to accelerated physical salt attack exposure. Cement and Concrete Research. 2016. Vol. 79, pp. 395–408.
8. Maciulaitis R., Malaiskiene J. Statybynes keramikos charakteristiku ir technologiniu parametru reguliavimo galimybes: monografija. Vilnius: Technika 2012. 184 p
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