Heat-Resistant Cellular Materials on the Basis of Composite Gypsum-Silica Binders

In the course of the research, characteristics of foam concrete materials on the basis of gypsum and nano-structured binders have been studied; compositions of the foam concrete on the basis of a composite gypsum-silica binder ensuring lower values of heat conductivity of composites at higher strength characteristics have been developed. Features of the microstructure as well as phase transformations taking place during the high-temperature treatment of the developed composite binder have been studied. It is revealed that the improvement of heat-resistance of the gypsum-silica cellular system is due to the formation of sub-crystal, prismatic generations of hydrosulphsilicate phases, hydroxylellestadite supposedly, under the impact of high temperature treatment. A method for producing the foam concrete mass which ensures the uniform distribution of the foam mass in the binding system as well as homogeneity of the porous structure of hardened cellular composite is proposed.

N.I. KOZHUKHOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
E.V. VOYTOVICH, Candidate of Sciences (Engineering)
A.V. CHEREVATOVA, Doctor of Sciences (Engineering)
I.V. ZHERNOVSKY, Candidate of Sciences (Geology and Mineralogy)
D.A. ALEKHIN, Engineer

Belgorod State Technological University named after V.G. Shukhov (46, Kostyukova Street, Belgorod, 308012, Russian Federation)

1. Zhernovsky I.V., Cherevatova A.V., Voitovich E.V., Ksenofontov A.D. Heat Resistance of Composite Binder of CaO-SO₃-SiO₂-H₂O System. Stroitel’nye materialy [Construction Materials]. 2014. No. 7, pp. 57–61. (In Russian).
2. Bessonov I.V., Shigapov R.I., Babkov V.V. Heat-Insulating Foamed Gypsum in Low-Rise Construction. Stroitel’nye materialy [Construction Materials]. 2014. No. 7, pp. 9–13. (In Russian).
3. Petropavlovskaya V.B., Buryanov A.F., Novinchenkova T.B. Low Power Intensive Gypsum Materials and Products Based on Industrial Waste. Stroitel’nye materialy. [Construction Materials]. 2006. No. 7, pp. 8–9. (In Russian).
4. Strokova V.V., Cherevatova A.V., Zhernovsky I.V., Voytovich E.V. Features of Phase Formation in a Composite Nanostructured Gypsum Binder. Stroitel’nye materialy [Construction Materials]. 2012. No. 7, pp. 9–12. (In Russian).
5. Cherevatova A.V., Zhernovsky I.V., Strokova V.V. Mineral’nye nanostrukturirovannye vjazhushhie. Priroda, tehnologija i perspektivy primenenija [Mineral nanostructured binders. Nature, technology and prospective of application]. Saarbrucken: LAM LAMBERT Academic Publishing GmbH&Co. KG. 2011. 170 pp.
6. Dashitsirenov D.D., Zayakhanov М.Е., Urkhanova L.A. Effective foam concrete based on effusive rocks. Stroitel’nye materialy [Construction Materials]. 2007. No. 4, pp. 50–51. (In Russian).
7. Z. Bazelova, L. Pach, J. Lokaj The effect of surface active substance concentration on the properties of foamed and non-foamed gypsum. Ceramics – Silikáty. 2010. No. 54, pp. 379–385.
8. Dashitsirenov D.D., Zayakhanov М.Е., Urkhanova L.A. Effective foam concrete based on effusive rocks. Stroitel’nye materialy [Construction Materials]. 2007. No. 4, pp. 50–51. (In Russian).
8. Pavlenko N.V., Cherevatova A.V., Strokova V.V. Features of rational pore structure formation in foam concrete on the base of nanostructured binder. Stroitel’nye materialy [Construction Materials]. 2009. No. 10, pp. 33–36. (In Russian).
9. Strokova V.V., Cherevatova A.V., Pavlenko N.V., Miroshnikov E.V., Shapovalov N.A. Estimation of efficiency of nanostructured binder application when light-weight cellular composite production. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shukhova. 2011. No. 4, pp. 48–51. (In Russian).
10. Solovyov L.A. Full-profile refinement by derivative difference min-imization. Journal of Applied Crystallography. 2004. No. 37, pp.743–749.
11. Fernandez-Garcia M., Martynez-Arias A., Hanson J.C., Rodriguez J.A. Nanostructured Oxides in Chemistry: Characterization and Properties. Chem. Rev. 2004. No. 104, pp. 4063–4104.
12. Dubrovinsky L.S., Piloyan G.О. Influence of crystallite size on temperature of polymorphous αβ transformation for quartz. Docladyi Academii nauk SSSR. 1986. Vol. 286. No. 4, pp. 958–961. (In Russian).