Researching of cement paste fluidity for hydraulic concrete with superplasticizers modification
https://doi.org/10.37538/0005-9889-2024-5(624)-45-52
EDN: BPRIUM
Abstract
Introduction. Ensuring reliable operation of hydraulic structures is inextricably linked with ensuring the strength and durability of their structures. Hydraulic structures are characterized by long service life, therefore ensuring durability is the basis for reliable operation of structures. In the modern implementation of a concrete project, there are several methods for increasing the density, strength and moisture resistance of concrete, incl. the use of plasticizing additives.
Aim. The study of the fluidity of cement paste modified with modern chemical plasticizer additives.
Materials and methods. Portland cement of CEM I 42.5N type was used as a binding material. To determine the fluidity indicators of cement paste, superplasticizers of domestic and imported production were used: BASF MasterGlenium ACE 430, BASF MasterGlenium 808 PAV, Sika Sikament BV 3M, JV Osnovit Safescreen SPP1. The methodology included the comprehensive use of a literature review, standardized methods for determining the spread of cement paste (using the Suttard device) and selection of compositions.
Results. It has been established that the use of effective superplasticizers in optimal dosages can significantly increase the fluidity of cement paste. The use of BASF MasterGlenium ACE 430 at a dosage of 1.5 % increases the initial spread by 5.5 times, and after 120 minutes the diameter of the spread is 4.5 times greater than the control composition. Using BASF MasterGlenium 808 PAV at a dosage of 0.9 % increases the initial spread by 2.9 times, reaching a maximum of 236 mm after 60 minutes.
Conclusions. The use of effective superplasticizers in optimal dosages can significantly improve the fluidity of cement paste, that is important for ensuring high-quality concreting of complex hydraulic structures. The results of the study contribute to the development of technologies for increasing the reliability and durability of hydraulic structures.
About the Authors
M. E. Vishtorsky
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy; Moscow State University of Civil Engineering (National Research University)
Russian Federation
Russian Federation
Evgeny M. Vishtorsky, Cand. Sci. (Engineering), Associate Professor of the Department of Agricultural Construction and Real Estate Expertise, Russian State Agrarian University Moscow State Agricultural Academy named after K.A. Timiryazev; Associate Professor of the Department of Testing Constructions, Moscow State University of Civil Engineering (National Research University), Moscow
e-mail: vishtorsky@gmail.com
I. V. Belov
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Igor V. Belov*, Postgraduate Student, Assistant at the Department of Agricultural Construction and Real Estate Expertise, Russian State Agrarian University Moscow State Agricultural Academy named after K.A. Timiryazev, Moscow
e-mail: bivik.1995@yandex.ru
A. A. Tkachev
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Aleksandr A. Tkachev, Cand. Sci. (Engineering), Associate Professor of the Department of Agricultural Construction and Real Estate Expertise, Russian State Agrarian University Moscow State Agricultural Academy named after K.A. Timiryazev, Moscow
e-mail: tkachevaa@yandex.ru
References
1. Vishtorsky E.M., Belov I.V., Nazarova A.V. Highperformance cement concrete for hydro-engineering construction. <i>Vestnik Lugansk Vladimir Dahl State University</i>. 2023, no. 1 (67), pp. 49–53. (In Russian).
2. Okhapkin G.V. Justification of rational technical solutions for the repair of areal destruction of concrete of hydraulic structures in a zone of variable level: abstract... diss. of the Cand. Sci. (Engineering). Moscow, 2019. (In Russian).
3. State Standard 31108-2020. Common cements. Specifications. Moscow: Standartinform Publ., 2020. (In Russian).
4. State Standard 30515-2013. Cements. General specifications. Moscow: Standartinform Publ., 2014. (In Russian).
5. Voronenko M.E., Skibina A.A., Egorova E.V., Lakhtarina S.V., Petrik I.Yu. Heavy concrete for hydraulic structures. <i>Proceeding of the Donbas National Academy of Civil Engineering and Architecture</i>. 2022, no. 1 (153), pp. 49–53. (In Russian).
6. Kovalenko D. Cement composites modified with expanding additives. <i>Proceeding of the Donbas National Academy of Civil Engineering and Architecture</i>. 2020, no. 1 (141), pp. 162–169. (In Russian).
7. Amanbaev A.A. Results of the development of technology for underwater repair of reinforced concrete structures of hydraulic structures. <i>Abstracts of the reports “The Ninth Scientific and Technical Conference. Hydropower. Hydraulic engineering. New developments and technologies”</i>. St. Petersburg, October 22–24, 2015. (In Russian).
8. Nemova D., Murgul V., Golik A., Chizhov E., Pukhkal V., Vatin N. Reconstruction of administrative buildings of the 70s: the possibility of energy modernization. <i>Journal of Applied Engineering Science</i>. 2014, vol. 12 (1), pp. 37–44. DOI: https://doi.org/10.5937/jaes12-5610
9. Stevanovic I., Stanojevic D., Nedic A. Setting the after sale process and quality control at car dealerships to the purpose of increasing clients satisfaction. <i>Journal of Applied Engineering Science</i>. 2013, vol. 11 (2), pp. 81–88. DOI: https://doi.org/10.5937/jaes11-3821
10. Vishtorsky E.M., Tkachev A.A., Nazarova A.V., Kovalenko D.S. Building materials: a textbook. Moscow: Russian State Agrarian University of the Moscow Agricultural Academy named after K.A. Timiryazev, 2024, 98 p. (In Russian).
11. Egorova E.V. Self-compacting concretes with a multifunctional modifier based on industrial waste: abstract... diss. of the Cand. Sci. (Engineering). Makeyevka, 2016. (In Russian).
12. Khaljushev A.K. Exploitation properties of concrete with the modified composite cements. <i>Modern Industrial and Civil Construction</i>. 2012, vol. 8, no. 3, pp. 149–158. (In Russian).
13. Bajenov U.M., Lukutcova N.P., Karpikov E.G. Fineaggregate concrete have modified by the complex microdisperse additive. <i>Herald of Moscow State Building University</i>. 2013, no. 2, pp. 94–100.
14. Dvorkin L.I., Dvorkin O.L. Computational forecasting of properties and design of concrete compositions: an educational and practical guide. Moscow; Vologda: Infra-Engineering, 2016, 386 p. (In Russian).
15. Vishtorsky E.M., Nazarova A.V. Influence of organomineral additives on the basis of waste production of mineral fertilizers on the properties of cement stone. <i>Vestnik Lugansk Vladimir Dahl State University</i>. 2021, no. 12 (54), pp. 30–33. (In Russian).
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Review
For citations:
Vishtorsky M.E., Belov I.V., Tkachev A.A. Researching of cement paste fluidity for hydraulic concrete with superplasticizers modification. Concrete and Reinforced Concrete. 2024;624(5):45-52. (In Russ.) https://doi.org/10.37538/0005-9889-2024-5(624)-45-52. EDN: BPRIUM
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