AbstractAbout AuthorsReferences
The use of chemical additives of multifunctional action on the basis of polymers and various salts makes it possible to regulate rheological and technological properties of concrete mixes due to phenomena of adsorption modification of cement grains and product of its hydration. Two types of complex additives of multifunctional action have been developed on the basis of a modified product of the coke chemistry. SAS-2 Additive contains 50–60% of an active binder, 20–25% of salts of uncondensed sulphonic acid, and 20–25% of sodium sulfate. SAS-3 Additive additionally includes the nitri-lotri-methyl-phosphonic acid. Results show that SAS-2 prolongs the safety of mobility of the concrete mix from an hour up to an hour and a half, SAS-3 – up to 3 and more hours. It is established that SAS-3 is not very sensitive to the mineralogical composition of cements. Despite of slowdown of the initial structure formation concrete with SAS-3 intensively increase the strength in later periods of hardening. The stable effect is provided within a wide range of cement content (350–500 kg/m3) and at different initial mobilities of the concrete mixes.
A.A. GUVALOV1, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
S.I. ABBASOVA1, Candidate of Sciences (Chemistry);
T.V. KUZNETSOVA2, Doctor of Sciences (Engineering)
S.I. ABBASOVA1, Candidate of Sciences (Chemistry);
T.V. KUZNETSOVA2, Doctor of Sciences (Engineering)
1 Azerbaijan University of Architecture and Construction (5, Ayna Sultanova Street, Baku, AZ-1073 Azerbaijan)
2 Dmitry Mendeleev University of Chemical Technology of Russia (9, Miusskaya Square, Moscow, 125047, Russian Federation)
1. Spitatos N., Rade M., Mailvaganam N. et al. Super-plasticizers for Concrete: Fundamentals, Technology and Practice. Marquis, Quebec, Canada. 2006. 322 p.
2. Batrakov V.G. Modifitsirovannye betony. Teoriya i praktika [The modified concrete. Theory and practice]. Moscow: Stroyizdat. 1998. 768 p.
3. Bazhenov Yu.M., Dem’yanova B.C., Kalashnikov V.I. Modifitsirovannye vysokokachestvennye betony [The modified high-quality concrete]. Moscow: ASV. 2006. 368 p.
4. Batrakov V.G. Modifiers of concrete: new opportunities and prospects. Stroitel’nye Materialy [Construction materials]. 2006. No. 10, pp. 4–7. (In Russian).
5. Vovk A.I. Hydration of tricalcium aluminate C3A and mixtures of C3A-gypsum in the presence of surfactants: adsorption or surface phase formation? Kolloidnyi zhurnal. 2000. Vol. 62. No. 1, pp. 31–38. (In Russian).
6. Izotov V.S., Sokolova Yu.A. Khimicheskie dobavki dlya modifikatsii betona [Chemical additives for concrete modification]. Moscow: Paleotip. 2006. 244 p.
7. Usherov-Marshak A.V., Tsiak M., Pershina L.A. Compatibility of cements with chemical and mineral additives. Tsement i ego primenenie. 2002. No. 6, pp. 6–8. (In Russian).
8. Guvalov A.A. Management of the structure formation of cement systems with the use of modifiers, The Sixth international conference “Phase Transformations and Durability of Crystals”. Chernogolovka. 2010, pp. 119. (In Russian).
9. Guvalov A.A., Kabus’ A.V., Usherov-Marshak A.V. Influence of an organo-mineral additive on early hydration of cement. Stroitel’nye materialy [Construction materials]. 2013. No. 9, pp. 94–95. (In Russian).
10. Guvalov A.A. Management of the structure formation of cement systems with polyfunctional superplasticizers. Tekhnika i tekhnologiya silikatov. 2011. No. 3, pp. 24–27. (In Russian).
11. Guvalov A.A. Effect of organomineral modifiers on the strength of concrete. Materialy VI Mezhdunarodnoi nauchnoi konferentsii «Prochnost’ i razrushenie materialov i konstruktsii». Orenburg. 2010, pp. 281–285. (In Russian).
2. Batrakov V.G. Modifitsirovannye betony. Teoriya i praktika [The modified concrete. Theory and practice]. Moscow: Stroyizdat. 1998. 768 p.
3. Bazhenov Yu.M., Dem’yanova B.C., Kalashnikov V.I. Modifitsirovannye vysokokachestvennye betony [The modified high-quality concrete]. Moscow: ASV. 2006. 368 p.
4. Batrakov V.G. Modifiers of concrete: new opportunities and prospects. Stroitel’nye Materialy [Construction materials]. 2006. No. 10, pp. 4–7. (In Russian).
5. Vovk A.I. Hydration of tricalcium aluminate C3A and mixtures of C3A-gypsum in the presence of surfactants: adsorption or surface phase formation? Kolloidnyi zhurnal. 2000. Vol. 62. No. 1, pp. 31–38. (In Russian).
6. Izotov V.S., Sokolova Yu.A. Khimicheskie dobavki dlya modifikatsii betona [Chemical additives for concrete modification]. Moscow: Paleotip. 2006. 244 p.
7. Usherov-Marshak A.V., Tsiak M., Pershina L.A. Compatibility of cements with chemical and mineral additives. Tsement i ego primenenie. 2002. No. 6, pp. 6–8. (In Russian).
8. Guvalov A.A. Management of the structure formation of cement systems with the use of modifiers, The Sixth international conference “Phase Transformations and Durability of Crystals”. Chernogolovka. 2010, pp. 119. (In Russian).
9. Guvalov A.A., Kabus’ A.V., Usherov-Marshak A.V. Influence of an organo-mineral additive on early hydration of cement. Stroitel’nye materialy [Construction materials]. 2013. No. 9, pp. 94–95. (In Russian).
10. Guvalov A.A. Management of the structure formation of cement systems with polyfunctional superplasticizers. Tekhnika i tekhnologiya silikatov. 2011. No. 3, pp. 24–27. (In Russian).
11. Guvalov A.A. Effect of organomineral modifiers on the strength of concrete. Materialy VI Mezhdunarodnoi nauchnoi konferentsii «Prochnost’ i razrushenie materialov i konstruktsii». Orenburg. 2010, pp. 281–285. (In Russian).
For citation: Guvalov A.A., Abbasova S.I., Kuznetsova T.V. Efficiency of modifiers when regulating properties of concrete mixes. Stroitel’nye Materialy [Construction Materials]. 2017. No. 7, pp. 49–51. DOI: https://doi.org/10.31659/0585-430X-2017-750-7-49-51. (In Russian).