Arhangel'sk, Arkhangelsk, Russian Federation
the paper shows the possibility of producing a thermal insulating composite based on basalt fibers and sapo-nite-containing mining waste. A method for manufacturing thermal insulating composites from hydro-mass with different contents of the mixture components is proposed. Basalt fibers were used as a filler, and pre-mechanoactivated saponite-containing material (SCM) was used as a binder. It was found experimentally that depending on the composition of composites, the coefficient of thermal conductivity varies from 0.1109 to 0.1342 W/(m•K), and the compressive strength – from 0.45 to 0.93 MPa. In addition, it was found that thermal modification of composites at temperatures up to 1200°C significantly (up to 3 times) increases the compressive strength of composites, while not affecting the coefficient of thermal conductivity. The ex-periments to determine the conductivity of the composite “basalt fiber – SСM” depending on its moisture content showed that the obtained composite is characterized by intense and linear increase in the values of conductivity when the humidity of the sample to 12% and further increase in humidity practically does not change the values of the coefficient of thermal conductivity. Comparison of the studied thermal insulation composite with known structural thermal insulation materials in terms of its thermal insulation and strength characteristics showed that it is comparable to gas and foam blocks. It should also be noted that this material is environmentally safe and can withstand high temperatures without collapsing.
saponite-containing material, thermal insulation materials, "green" building materials, structural insulation
1. Danilov V.E., Ajzenshtadt A.M., Mahova T.A. Konstrukcionnaja teploizoljacija na osnove otho-dov derevoobrabatyvajushhej i gornoj promyshlennosti. Promyshlennoe i grazhdanskoe stroitel'stvo. 2017. 1. P. 97 – 100. (rus.)
2. Morozova M.V., Ajzenshtadt A.M., Mahova T.A. Primenenie saponit-soderzhashhego materiala dlja poluchenija morozostojkih betonov. Promyshlennoe i grazhdanskoe stroitel'stvo. 2015. 1. P. 28 – 31. (rus.)
3. Ageeva M.S., Shapovalov M.S., Bocman A.N., Ishhenko A.V. K voprosu ispol'zovanija promysh-lennyh othodov v proizvodstve vjazhushhih veshhestv. Vestnik BGTU im. V.G. Shuhova. 2016. 9. P. 58 – 62. (rus.)
4. Hudjakova L.I. Ispol'zovanie othodov gornodobyvajushhej promyshlennosti v proizvodstve stroitel'nyh materialov. XXI vek. Tehnosfernaja bezopasnost'. 2017. 2 (2). P. 45 – 56. (rus.)
5. Drozdjuk T.A., Ajzenshtadt A.M., Tutygin A.S., Frolova M.A. Neorganicheskoe svjazujushhee dlja mineralovatnoj teploizoljacii. Stroitel'nye materialy. 2015. 5. P. 86 – 88. (rus.)
6. Drozdyuk T., Aizenshtadt A., Tutygin A. and Frolova M. Basalt fiber insulating material with a miner-al binding agent for industrial use. IOP Conference Series: Materials Science and Engineering. 2016. 124 (1). P. 1 – 4.
7. Morozova M.V., Ajzenshtadt A.M. Svojstva termicheski modificirovannogo saponit-soderzhashhego othoda kimberlitovyh rud. XXII Slovak-Polish-Russian seminar «Theoretical foundation of civil engineer-ing». Moscow, 2013. P. 573 – 576. (rus.)
8. Drozdyuk T.A., Ayzenshtadt A.M., Frolova M.A. Effect of thermal modification of saponite-containing material on energy properties of its surface. Journal of Physics: Conference Series. 2019. 1400 (077053). doi:10.1088/1742-6596/1400/7/077056
9. Frolova M.A., Tutygin A.S., Ajzenshtadt A.M., Lesovik V.S., Mahova T.A., Pospelova T.A. Kriterij ocenki jenergeticheskih svojstv poverhnosti. Nanosistemy: fizika, himija, matematika. 2011. 2 (4). P. 1 – 6. (rus.)
10. Nizovcev M.I., Terehov V.I., Jakovlev V.V. Vlijanie sorbcionnogo uvlazhnenija avtoklavnogo gazo-betona na ego teploprovodnost'. Izvestija vysshih uchebnyh zavedenij. Stroitel'stvo. 2004. 6. P. 31 – 35. (rus.)
11. Pastushkov P.P. O problemah opredelenija teploprovodnosti stroitel'nyh materialov. Stroitel'nye mate-rialy. 2019. 4. P. 57 – 63. (rus.)
