AbstractAbout AuthorsReferences
The substantiation of the necessity to use a complex of additives to improve properties of anhydrite binder and influence mechanism on structure with the help of methods of quantum-chemical modeling and physical-chemical analysis is given. Particles of dispersed magnesite act as crystallization centers, along the surface of which crystalline hydrates of calcium sulfate dihydrate are formed, and they also contribute to structuring of anhydrite matrix increasing the durability up to 100% at optimal additive content of 3%. Based on the results of IR-spectra, carbon nanotubes have much more influence on calcium sulfate dihydrate structure than caustic magnesite. The more compact and durable structure with the increased durability characteristics up to 150% in comparison with reference composition with optimal concentration of carbon nanotubes – 0,001% and magnesite – 3% is formed during joint use of additives.
YU.V. TOKAREV1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
D.V. GOLOVIN1, Master of 2 course (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.F. BURYANOV2, Doctor of Sciences (Engineering)
HUIGANG XIAO3, Ph.D.
TAO DU3, Graduate Student 1st year
D.V. GOLOVIN1, Master of 2 course (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.F. BURYANOV2, Doctor of Sciences (Engineering)
HUIGANG XIAO3, Ph.D.
TAO DU3, Graduate Student 1st year
1 Kalashnikov Izhevsk State Technical University (7, Studencheskaya Street, Izhevsk, 426069, Russian Federation)
2 Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)
3 Harbin Institute of Technology, (92 Xidazhi Street, Nangang, Harbin, Heilongjiang, China, 150001)
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3. Siddique R., Mehta A. Effect of carbon nanotubes on properties of cement mortars. Construction and Building Materials. 2014. No. 50, pp. 116–129.
4. Setina J., Gabrene A., Juhnevica I. Effect of pozzolanic additives on structure and chemical durability of concrete. Procedia Engineering. 2013. No. 57, pp. 1005–1012.
5. Inozemtsev A.S., Korolev E.V. Structure formation and properties of constructional high-duty light concretes with the application of nanomodifier BisNanoActivus. Stroitel’nye Materialy [Construction Materials]. 2014. No. 1–2, pp. 33–37. (In Russian).
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10. Ye Qing, Zhang Zenan, Kong Deyu, Chen Rongshen. Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume. Construction and Building Materials. 2007. Vol. 21, pp. 539–545.
11. Sychev M.M. Neorganicheskie klei [Inorganic glues]. Leningrad: Chimiya. 1974. 160 p.
12. Chen S.J., Collins F.G., Macleod A.J.N., Pan Z., Duan W.H., Wang C.M. Carbon nanotube–cement composites: A retrospect. Civil&Structural Engineering. 2011. Vol. 4. No. 4, pp. 254–265.
13. Bobryshev A.N., Kozomazov V.N., Avdeev R.I., Solomatov V.I. Sinergetika dispersno-napolnennych kompositov [Synergetics of disperse-filled composites]. Moscow: TSKT. 1999. 252 p.
For citation: Tokarev Yu.V., Golovin D.V., Buryanov A.F., Xiao Huigang, Du Tao. On Influence Mechanism of Magnesite-Based Active Additives and Carbon Nanotubes on Structure and Properties of Anhydrite Binder. Stroitel’nye Materialy [Construction Materials]. 2015. No. 2, pp. 59-62. DOI: https://doi.org/10.31659/0585-430X-2015-722-2-59-62