HARDENING AND EFFLORESCENCE RESISTANCE OF CEMENT MORTARS MODIFIED BY BLACK SHALE
https://doi.org/10.31675/1607-1859-2018-20-5-119-127
Abstract
The paper presents results of research into plaster coating of brick walls in humid premises. It is found that the addition of black shale and waste from flotation gold extraction from ores in the amount of 10 % of the cement bulk, increases the structure formation and strength of mortars by 34 %. X-ray phase and differential thermal analyses show that the increase in the rate of structure formation of mortars is due to the interaction of hydraulically active ground black shale with portlandite accompanied by the formation of calcium hydrosilicates. In mortars with the black shale addition, 1–2 nm pores form, which explain the increased resistance of mortars to the effloresce formation on the surface of plaster coatings of brick walls.
About the Authors
S. A. Belykh
Bratsk State University
Russian Federation
Russian Federation
PhD, A/Professor
40, Makarenko Str., 665709, Bratsk, Russia
A. A. Chikichev
Bratsk State University
Russian Federation
Russian Federation
Research Assistant
40, Makarenko Str., 665709, Bratsk, Russia
L. V. Il''ina
Novosibirsk State University of Architecture and Civil Engineering
Russian Federation
Russian Federation
DSc, Professor
113, Leningradskaya Str., 630008, Novosibirsk, Russia
A. I. Kudyakov
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
DSc, Professor
2, Solyanaya Sq., 634003, Tomsk, Russia
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Review
For citations:
Belykh S.A., Chikichev A.A., Il''ina L.V., Kudyakov A.I. HARDENING AND EFFLORESCENCE RESISTANCE OF CEMENT MORTARS MODIFIED BY BLACK SHALE. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture. 2018;(5):119-127. (In Russ.) https://doi.org/10.31675/1607-1859-2018-20-5-119-127
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