Composite Materials Based on Cement With Nanodispersed Silicon Dioxide
Abstract
The paper deals with the improvement of compressive strength of cement brick modified by nanodispersed SiO2 particles obtained by a plasma method. Operational parameters are determined for the production of 10-300 nm SiO2 nanoparticles with the specific surface of 32 m2/g. For the homogeneous distribution of SiO2 nanoparticles, cement brick modified with the additive, was premixed in a laboratory mixer of gravitational type. It is shown that at early stages of hardening (1 day), SiO2 additive increases the strength of cement brick by 17.6 %, while at later stages (28 days) this increase is 69 %. The X-ray phase analysis is used to investigate the composition of new phases in modified cement brick.
About the Authors
Pavel V. Kosmachev
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Olga V. Dem'yanenko
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Viktor A. Vlasov
Tomsk State University of Architecture and Building; National Research Tomsk Polytechnic University
Russian Federation
Russian Federation
Natal'ya O. Kopanitsa
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Nelly K. Skripnikova
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
References
1. Kopanitsa N.O., Sarkisov Yu.S., Dem'yanenko O.V. Primenenie nanodispersnogo kremnezema vproizvodstve stroitel’nykh smesej [Nanodispersed silicon dioxide used in the production of mix mortars]. Vestnik of Tomsk State University of Architecture and Building. 2016. No. 5. Pp. 140–150 (rus)
2. Sarkisov Yu.S., Kopanitsa N.O., Kasatkina A.V. O nekotorykh aspektakh primeneniya nanomaterialov i nanotekhnologii v stroitel'stve [Some aspects of construction use of nanomaterials and nanotechnologies]. Vestnik of Tomsk State University of Architecture and Building. 2012. No. 4. Pp. 226–234. (rus)
3. Kosmachev P., Vlasov V., Skripnikova N. Issledovanie struktury i svojstv nanoporoshka SiO2 poluchennogo plazmennym metodom iz prirodnykh syr’evykh materialov [Structure and properties of SiO2 nanopowder obtained from high-silica raw materials by plasma method]. Izvestiya vuzov. Fizika. 2017. No. 60 (2). Pp. 46–50. (rus)
4. Ilves V., Zuev S., Sokovin A., Murzakaev A. Svoystva amorfnogo nanoporoshka dioxida kremniya, poluchennogo impul’snym ispareniem [Properties of amorphous silicon dioxide nanopowder obtained by pulsed electron evaporation]. Fizika tverdogo tela. 2015. No. 57 (12). Pp. 2439–2445. (rus)
5. Brunauer S., Emmett P.H., Teller E. Adsorption of Gases in Multimolecular Layers. Journal of American Chemical Society. 1938. No. 60 (2). Pp. 309–319.
Review
For citations:
Kosmachev P.V., Dem'yanenko O.V., Vlasov V.A., Kopanitsa N.O., Skripnikova N.K. Composite Materials Based on Cement With Nanodispersed Silicon Dioxide. Vestnik of Tomsk state university of architecture and building. 2017;(4):139-146. (In Russ.)
Views:
778
Email this article 