THEORETICAL AND METHODOLOGICAL BASIS OF CREATING POLYFUNCTIONAL MODIFIERS OF MASS CONCRETES FOR RECONSTRUCTION WORKS
Abstract and keywords
Abstract (English):
The findings of the known research in the sphere of concretes and concrete mixes chemical modification have been generalized and systematized; the theoretical statements and methodological recommendations in creating high-performance polyfunctional modifiers have been presented. It was demonstrated that the leading role in concrete modification is played nowadays by this class of additives, as their application provides concretes and concrete mixes with a set of prescribed properties for their operation in various conditions. It was pointed out that this sector is especially relevant in mass concreting, as the most widely used in conducting building and repair works and more demanding to the quality of concretes and concrete mixes. The modifiers were classified and the requirements to modifiers with account of their workability and functional use were listed. A high-performance fungicidal polyfunctional modifier for mass concretes, containing a plasticizing agent and hydration and hardening accelerator has been synthesized. The colloid-chemical properties of the obtained modifier and the properties of concretes and concrete mixes with this modifier have been researched.

Keywords:
polyfunctional modifiers, mass concrete, concrete mix, colloid-chemical properties, synergism effect, high-strength concrete, longevity of concrete, high-slump and flow concrete mixes, electrolytes, sur-face-active substance, hardening accelerators, plasticizing activity, rheological properties, adsorption, electrokinetic potential, aggregative stability.
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References

1. Valenta O. Dolgovechnost´ betona. Pervyy mezhdunarodnyy kongress po khimii tsementa. M: Stroyizdat, 1973. S. 288-296.

2. Rekomendatsii po fiziko-khimicheskomu kontrolyu sostava i kachestva superplastifikatora S-3. M.: NIIZhB. 1984.

3. Metodicheskie rekomendatsii po otsenke effektivnosti dobavok. M.: NIIZhB, 1979. 24 s.

4. Kosukhin M.M. Regulirovanie svoystv betonnykh smesey i betonov kompleksnymi dobavkami s raznymi gidrofil´nymi gruppami: diss…. kand. tekhn. nauk. Voronezh. 1995. 173 s.

5. Usherov-Marshak A.V. Khimicheskie i mineral´nye dobavki v beton. Khar´kov, Kolorit. 2005. 280 s.

6. Batrakov V.G. Modifitsirovannye betony. M.: Stroyizdat, 1990. 400 s.

7. Ramachandran V.S., Fel´d¬man R.F., Kollepardi M. i dr. Dobavki v beton: spravoch. posobie / Pod. red. V.S. Ramachandrana: Per. s angl. G.I. Rozenberg, S.A. Boldyreva: Pod. red. S.A.Boldyreva, V.B. Ratinova. M.: Stroyizdat, 1988. 575 s.

8. Dovnar N.I., Kolesnikov N.A. Optimizatsiya reologicheskikh svoystv litykh betonnykh smesey s dobavkami superplastifikatorov / Reo¬logiya betonnykh smesey i ee tekhnologicheskie zadachi: tez. dokl. VI -Vsesoyuz.simpoz.. Riga, 1989. S. 124-125.

9. Izotov B.C. Reologiya tsementnogo testa s kompleksnymi dobavka¬mi / Reologiya betonnykh smesey i ee tekhnologicheskie zadachi: tez. dokl. VI Vsesoyuzn. simpoz.. Riga, 1989. S. 122-123.

10. Issledovanie mekhanizma deystviya kompleksnykh dobavok / Yu.M. Ba¬zhenov, V.B. Ratinov, T.I. Rozenberg i dr.. VII Mezhdunar. kongr. po khimii tsementa. M.: Stroyizdat, 1986.

11. Zavisimost´ konsistentsii rastvornykh smesey ot dobavok PAV / N.N. Kruglitskiy, V.N. Boyko, A. S. Zagaychuk i dr.. Stroitel´nye materialy i konstruktsii. Kiev. 1981. №3. S. 34-35.

12. Dobrolyubov G., Ratinov V.B., Rozenberg T.I. Prognozirovanie dolgovechnosti betona s dobavkami. M.: «Stroyizdat», 1983. 213 s.

13. Dvorkin L.I., Kizima V.P. Effektivnye litye betony. L´vov: Vysshaya shkola, 1986. 144 s.

14. Poluektova V.A., Kosukhin M.M., Malinovker V.M., Shapovalov N.A. Polifunktsional´nyy superplastifikator dlya betonov na osnove otkhodov proizvodstva pirokatekhina. Fundamental´nye issledovaniya. 2013. № 1. Ch. 3. S. 718-722.

15. Kosukhin M.M., Shapovalov N.A., Kosukhin A.M., Babin A.A. Superplastifikator dlya betonov na osnove legkoy piroliznoy smoly . Stroitel´nye materialy.2008. № 7. S. 44.

16. Kosukhin, M.M., Kosukhin A.M., Shapovalov N.A. Kompozitsionnoe vyazhushchee dlya vysokomorozostoykikh dorozhnykh betonov. Vestnik Belgorodskogo gosudarstvennogo tekhnologicheskogo universiteta im. V.G. Shukhova. 2010. №1. S. 51-53.

17. Poluektova V.A., Shapovalov N.A., Kosukhin M.M., Slusar A.A. Plasticizing Additives For Water Mineral Dispersions On The Basis Of Oxyphenol Oligomers . Advances in Natural and Applied Sciences, 8(5) May 2014, Pages: 373-379.


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