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
References
1. Volodchenko A.A., Zagorodnyuk L.KH., Prasolova E.O., Akhmed A.A., Kulik N.V., Kolomatskiy A.S. Problema ratsional‟nogo prirodopol‟zovaniya [The problem of natural resource management]. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shukhova. 2014. No. 6. Pp. 7–10. (rus)
2. Belykh S.A., Chikichev A.A. Otkhody flotatsionnogo izvlecheniya zolota mestorozhdeniya «Sukhoy log» kak perspektivnoye syr‟yë dlya proizvodstva stroitel‟nykh materialov [Waste from flotation extraction of gold from the Sukhoy Log deposit as perspective raw materials for building materials production]. Trudy Bratskogo gosudarstvennogo universiteta. Seriya: Estestvennye i inzhenernye nauki (Proc. Bratsk State University. Series: Natural and Engineering Sciences). 2015. V. 1. Pp. 246–248. (rus).
3. Belykh S.A., Kudyakov A.I., Chikichev A.A. Sukhaya stroitel‟naya smes‟ s povyshennoy adgezionnoy prochnost‟yu dlya otdelki kirpichnykh poverkhnostey vo vlazhnykh pomeshcheniyakh [Dry building mix with high adhesion strength for masonry finishing in premises with high humidity]. Vestnik of Tomsk State University of Architecture and Building. 2017. No. 1 (60). Pp. 122–133. (rus)
4. Il‟ina L.V., Khakimullina S.A., Kadorkin D.A. Vliyaniye dispersnykh mineral‟nykh dobavok na prochnost‟ i vysoloobrazovaniye melkozernistogo betona [Influence of dispersed mineral additives on strength and efflorescence of fine concrete]. Nauka molodykh – budushchee Rossii. Sbornik nauchnykh statei mezhdunarodnoi nauchnoi konferentsii perspektivnykh razrabotok molodykh uchenykh (Int. Sci. Forum „Science of the Future – Science of Youth‟), in 3 vol. South-West State University, 2016. Pp. 31–35 (rus).
5. Il‟ina L.V., Berdov G.I. Povysheniye prochnosti portlandtsementnogo kamnya pri vvedenii mineral‟nykh dobavok [Durability increase of Portland cement brick due to introduction of mineral additives]. Tekhnologii betonov. 2014. No. 6 (95). Pp. 47–49. (rus)
6. Belykh S.A., Fadeyeva A.M. Vozdukhovovlekayushchiye dobavki kompleksnogo deystviya v sukhiye stroitel‟nyye smesi [Air-entraining additives of complex action in dry build mixes]. Beton i zhelezobeton v tret'em tysyacheletii: Materialy chetvertoi Mezhdunarodnoi nauchnoprakticheskoi konferentsii (Proc. 4th Int. Sci. Conf. „Concrete and Reinforced Concrete in the Third Millenium‟). Rostov-on-Don, 2006. V. 1. Pp. 76–81. (rus)
7. Martikhayeva D.Kh., Makrygina V.A., Vorontsova A.E., Razvozzhayeva E.A. Uglerodistoye veshchestvo v metamorficheskikh i gidrotermal‟nykh porodakh [Carbonaceous matter in metamorphic and hydrothermal rocks]. Novosibirsk, 2001. 127 p. (rus)
8. Chikichev A.A., Belykh S.A., Kudyakov A.I. Gidrofobno-fungitsidnaya dobavka i shtukaturnaya sukhaya smes‟ na eyo osnove [Hydrophobic-fungicidal additive and plaster dry mix produced therefrom]. Vestnik MGSU. 2017. No. 6. Pp. 661–668. (rus)
9. Emmanuel S., Berkowitz B. Effects of pore-size controlled solubility on reactive transport in heterogeneous rock. Geophysical Research Letters. 2007. V. 34. L06404.
10. Rijniers L.A., Huinink H.P., Pel L., Kopinga K. Experimental evidence of crystallization pressure inside porous media. Physical Review Letters. 1994. V. 94 (7). 075503.
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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