Abstract

The article provides a study of the effect of dispersed mineral additives (quartz sand, diopside, glass and limestone powder) added in an amount of from 1 to 80% by weight of the gypsum, the mechanical strength of gypsum. Of great importance for increasing the dispersion’ strength is the amount of introduced additives. The optimum concentration of additives will be achieved when its particle on all sides by tightly surrounded by binder particles. Minimal amount of additives leads to their reduced effectiveness. With more, their contents are possible direct contacts between the particles of additives, which also reduce the effectiveness of their influence. It is shown that the introduction of the optimum amount of additives strengthens the structure of gypsum, which is manifested in the displacement endoeffect thermograms at higher temperatures. The micro-reinforcing of gypsum stone by additives having high hardness (quartz, glass), enhances its strength in compression by 50-60%.

Keywords:

Diopside, gypsum, limestone dust, mechanical strength and minerals, micro-reinforcing, quartz, quartz sand,

References

1. Berdov, G.I. and V.N. Zyryanova, 2010. Ways to improve the technology and properties of building materials. Bull. Univ., Build., 4: 51-62.
   
2. Berdov, G.I., L.V. Ilina, V.N. Zyryanova, N.I. Nikonenko and V.A. Sukharenko, 2012a. Influence of microfillers the properties of building materials. Build. Mater., 9: 79-83.
   
3. Berdov, G.I., L.V. Ilina, V.N. Zyryanova et al., 2012b. Influence of Microfillers on Properties of Composite Building Materials. N. NGASU (Sibstrin), pp: 124.
   
4. Brueckner, H.G., E. Deyler and G. Fitch, 1981. Production and Application of Gypsum Building Materials. Stroyizdat, M., pp: 223.
   
5. Chernysheva, N.V. and M.B. Rybakova, 2009. Developing of composition of dispersion-reinforced cementitious. Bull. BSTU, 2: 84-87.
   
6. Domokeev, A.G., 1989. Construction Materials. Publishing House of the "High School", M., pp: 494.
   
7. Ferronskaya, A.V., 2004. Gypsum Materials and Products (Production and Use). Publishing House ASV, M., pp: 486.
   
8. Ferronskaya, A.V., V.F. Korovyakov, I.M. Baranov, A.F. Buryanov and Y.G. Losev, 2008. Gypsum in Low-Rise Building. Publishing House ASV, M., pp: 240.
   
9. GOST 125-79, 1980. Cementing Gypsum. Technical Conditions. Intro. 1980-07-01. Tekhekspert. The Rules, Regulations, Standards, Technical Information [Digital Source].
   
10. Gusev, B.V., 2005. Concrete studies-fundamental and applied. Building Materials, Equipment, Technologies of XXI Century, 10: 20-21.
    
11. Kingeri, U.D., 1967. Introduction into Ceramics. Trans. from English. Stroyizdat, M., pp: 499.
    
12. Korovyakov, V.F. and A.V. Ferronskaya, 2010. Organomineral modifier of gypsum concretes and products based on them. Patent of the RF 2381191 as of Feb 10, 2010.
    
13. Kuzmina, V.P., 2007. Mechanical activation of materials for construction. Gypsum, Buil. Mater., 9: 52-54.
    
14. Kuznetsova, T.V. and B.E. Yudovich, 2005. Concrete-ways of development. Cement Appl., 5: 68-69.
    
15. Merkin, A.P. and M.I. Zeifman, 1982. New technological solutions in the production of cellular concrete. Overview. VNI IESM, M., 8(2): 38.
    
16. Osnovin, V.N., L.V. Shulyakov and D.S. Dubyago, 2006. Reference of Building Materials and Products. 2nd Edn., Phoenix, Rostov-on-Don, pp: 445.
    
17. Pauling, L., 1974. General Chemistry. Mir, M., pp: 846.
    
18. Pribytkov, E.A., 2013. Gypsum mixture. Patent of the RF 247 6402 as of February 27, 2013.
    
19. Pustovgar, A.P., 2008. Experience of gypsum binders in the construction of buildings. Build. Mater., 3: 81-84.
    
20. Ratinov, V.B., T.I. Rosenberg and I.M. Rubinina, 1962. USSR DAN. 145(5).
    
21. Shchepochkina, Y.A., 2013. Gypsum mixture. Patent of the RF No. 2479511 as of May 10, 2013.
    
22. Volzhensky, A.V. and A.V. Ferronskaya, 1974. Gypsum Binders and Products. Stroyizdat, Moscow, pp: 327.
    
23. Vorobyov, H.S., 1983. Gypsum Binder Products. Stroyizdat, M., pp: 200.
    
24. Zavadsky, V.F., A.F. Kosach and P.P. Deryabin, 2005. Building Materials and Products: Textbook. Publishing House SibADI, Omsk, pp: 254.
    
25. Zavadsky, V.F., 2012. The Technology of Building Materials and Products. In 2 Parts. Part 1. Building Materials and Products: Textbook. Publishing Centre "Academy", M., pp: 192.
    

Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.