The article presents the results of studies on obtaining a heat-insulating solution obtained by grinding. The binding compositions were synthesized at various ratios of cement and waste products of perlite sand in ajet mill under different grinding regimes. The features of grinding processes have been studied and technological and physicomechanical properties of the resulting binding compositions have been determined. The microstructure of cement stones obtained from activated Portland cement and binding compositions in ajet mill was studied by electron microscopy. It is established that open pores of cement-binding compositions prepared using perlitic fillers are filled with neoplasms and perlite grains have a plate-prismatic shape, which is clearly seen in micrographs. The microstructure of binding compositions has a dense structure due to a rationally selected composition, the use of an effective mineral filler, which creates additional substrates to form the internal microstructure of the composite. A comparative X-ray diffraction analysis of hydrated plain cement and binding composition was carried out and it was established that hydrated cement and binding composition are identical in mineral composition, having Ca hydroalumates, Ca (OH)2, CSH, and low amounts of ettringite. A distinctive feature of the diffractograms is the significant amorphization of the binding composition. The range of the optimal ratio of cement to perlite was found to be 1:9; 1:11; 1:13. A heat-insulating solution based on composite binder and expanded perlite aggregate (1:11) with a density of 1200 kg / m3 and a strength of 2.5 MPa was obtained. Modification of the solution by additives of superplasticizer; blowing agent; redispersible dispersion powder, it was possible to obtain a heat-insulating solution with a density of 973.11 kg/m3. Optimization of this solution with expanded polystyrene microspheres made it possible to obtain a density of the composite of 240-260 kg/m3 at a compressive strength of 1.05-1.15 MPa. The developed heat-insulating compounds have a reduced density and sufficient strength, which is the reason to recommend them for use in the manufacture of construction works.

binding compositions, jet mill, wastes of perlite sand production, granulometric composition, physical and mechanical properties, X-ray phase analysis, heat-insulating solution

1. Lesovik V.S., Alfimva N.I., Yakovlev E.A., Sheichenko  M.S. To the problem of increasing the efficiency of composite binders. Vestnik BGTU [Proceedings of BSTU] 2009. no. 1. pp. 30 – 33. (in Russian)

2. Lesovik V.S., Alfimova N.I., Vishnevskaya Ya.Yu. Highly effective composite astringents using nanomodifier. Vestnik of the Central Regional Branch of the Russian Academy of Architecture and Construction Sciences. [Vestnik TsRO RAASN] 2010. pp. 90. (in Russian)

3. Zagorodnuk L.H., Lesovik V.S., Shkarin A.V., Belikov D.A. et al. Creating Effective Insulation Solutions, Takinginto Accountthe Law of Affinity Structuresin Construction Materials. World Applied Sciences Journal. 2013. vol. 24. no. 11. pp. 1496–1502.

4. Lesovik V.S., Zagorodniuk L.H., Chulkova I.L. Law of the affinity of structures in materials science. Fundamental’nye isledovaniya [Fundamental research] 2014. no. 3. part. 2. pp. 267–271. (in Russian)

5. Lesovik VS Effective dry mixes for repair and restoration works / V.S.Lesovik, L.H.Zagorodniuk L.H., D.A. Belikov, A.Yu. Shchekina, A.A.Kuprina // Building Materials. –2014. – № 7. – P. 82–85. (in Russian)

6. Zagorodnyuk L.H., Lesovik V.S., Shamshurov A.V., Belikov  D.A. et al. Composite binders based on an organo-mineral modifier for dry repair mixtures. Vestnik BGTU [Bulletin of BSTU V.G.Shukhov] 2014. no. 5. pp. 25–31. (in Russian)

7. Zagorodnyuk L.H., Lesovik V.S., Belikov D.A. To the problem of design of dry repair mixes taking into account the affinity of structures. Vestnik TsRO RASAN [Bulletin of the Central Regional Branch of RAASN] 2014. no. 18. pp. 112–119. (in Russian)

8. Zagorodnyuk L.H., Lesovik V.S., Gainutdinov  R. Features of hardening mortars on the basis of dry mixtures. Vestnik TsRO RASAN [Bulletin of the Central Regional Branch of RAASN] 2014. pp. 93–98. (in Russian)

9. Lesovik V.S., Zagorodnuk L.H., Tolmacheva M.M., Smolikov A.A. et al. Structure-formation of contact layers of composite materials. Life Science Journal. 2014. vol. 11. no. 12. pp. 948–953.

10. Kuprina А.А., Lesovik V.S., Zagorodnyk L.H., Elistratkin  M.Y. Anisotropy of Materials Properties of Natural and Man-Triggered Origin. Research Journal of Applied Sciences. 2014. no. 9. pp. 816–819.

11. Lesovik V.S., Chulkova I.L., Zagorodnjuk L.H., Volodchenko A.A. et al. The Role of the Law of Affinity Structures in the Construction Material Science by Performance of the Restoration Works. Research journal of applied sciences. 2014. vol. 9. no. 12. pp. 1100–1105.

12. Volodchenko A.A., Lesovik V.S., Zagorodnjuk L.H., Volodchenko A.N. et al. The control of building composite structure formation through the use of multifunctional modifiers. Research journal of applied sciences. 2015. vol. 10. no. 12. pp. 931–936

13. Volodchenko A.A., Lesovik V.S., Zagorodnjuk L.H., Volodchenko A.N. et al. Influence Of The Inorganic Modifier Structure On Structural Composite Properties. International Journal of Applied Engineering Research. 2015. vol. 10. no. 19. pp. 40617–40622.

14. Sheichenko M.S., Lesovik V.S., Alfimova  N.I. Composite binders using high-magnesian wastes of the Kovdor deposit. Vestnik BGTU [BSTU bulletin] 2011. no. 1. pp. 64. (in Russian)

15. Ilinskaya G.G., Lesovik V.S., Zagorodnyuk L.H., Kolomatsky A.C. et al. Application of waste KMA in the production of dry construction mixtures. Vestnik BGTU [BSTU bulletin] 2012. no.  4. pp. 15 – 19. (in Russian)

16. Shkarin A.V., Zagorodnyuk L.Kh., Schekina A. Yu., Luginina I.G. Preparation of composite binder in various grinding aggregates. Vestnik BGTU [BSTU bulletin] 2012.no. 4. pp. 53–57. (in Russian)

17. Vishnevskaya Ya.Yu., Lesovik V.S., Alfimova N.I. Energy intensity of the synthesis of composite astringents depending on the genesis of the silica-containing component. Vestnik BGTU [BSTU bulletin]. 2011. no 3. pp. 53–56. (in Russian)

18. Lesovik V.S., Volodchenko A.A. Effect of the composition of raw materials on the properties of non-autoclaved silicate materials. Vestnik BGTU [BSTU bulletin] 2013. no. 1. pp. 10–15. (in Russian)

19. Zagorodnyuk L.H., Lesovik V.S. Increase of production efficiency of dry construction mixtures: monograph. Vestnik BGTU [BSTU bulletin] 2014. 548 p. (in Russian)

20. Shkarin A.V., Zagorodnyuk L.H., Schekina A.Yu., Luginina  I.G. Preparation of composite binder in various grinding aggregates. Vestnik BGTU [BSTU bulletin] 2012. no.  9. pp. 89–92. (in Russian)