Research for modification of concrete with ash-containing waste of Dnistrovska PSPS (Ukraine)

Authors

  • Nina Dmytriieva Odessa State Academy of Civil Engineering and Architecture, 4, Didrikhsona str., Odessa, Ukraine, 65029, Ukraine https://orcid.org/0000-0002-4828-1644
  • Irina Agafonova Bender Polytechnic Branch of Transnistrian State University named after T. G. Shevchenko, 7, Benderskoho povstannia str., Bendery, Moldova, 60940, Moldova, Republic of https://orcid.org/0000-0003-4330-2642
  • Nina Bostan Bender Polytechnic Branch of Transnistrian State University named after T. G. Shevchenko, 7, Benderskoho povstannia str., Bendery, Moldova, 60940, Moldova, Republic of https://orcid.org/0000-0003-4336-6398

DOI:

https://doi.org/10.15587/2706-5448.2020.214781

Keywords:

ash-containing waste, concrete modification, fly ash, concrete strength, Portland cement, superplasticizer

Abstract

The object of reseaerch is concrete samples modified with ash-containing fillers and plasticizers. As practice shows, the use of secondary resources is an important issue in the field of construction and entails significant savings. The issue is also considered from the point of view of environmental protection. The study is aimed at determining the effect of modification of concrete with ash-containing waste on the strength characteristics using the example of the hydroelectric power station of the Dnistrovska PSPS (Sokyriany district, Chernivtsi region, Ukraine). The main hypothesis of the study is the assumption that varying components such as fly ash, water glass, and superplasticizers will make it possible to obtain concrete with specified strength characteristics. To achieve the aim, the authors decided to use in the study the superplasticizer SikaPlast-520N and BETO-plast, Portland cement M400 and sands of the quarries of the Parkan and Suklei regions (Moldova). According to the plan of the experiment, studies of the influence of hardening conditions on the structure and properties of modified concrete samples were carried out. Destructive testing of samples was carried out in the laboratory directly on a hydraulic press.

The results of experiments without the addition of liquid glass and the introduction of a minimum amount of fly ash and experiments with the introduction of a minimum amount of fly ash and the addition of 3 % water glass are presented. To determine the dynamics of strength gain, tests were carried out on 7, 14 and 28 days. The presented results of the study of the samples on day 7 show a gain of more than 50 % strength. This indicates the possibility of reducing the curing period of structural concrete in the formwork system. A more complete and objective idea of the quality of concrete is possible while taking into account the average strength of concrete and its homogeneity.

Today, there is no unified theory that can relate the different properties of cement and filler to the final properties of a composite material. The issue of modifying concrete compositions when using fine aggregate from other quarries requires additional research. At the same time, the results of the experiment show that the use of microfillers based on wastes from the Dnistrovska PSPS provide ample opportunities not only for saving binders, but also for improving the physical, mechanical and operational characteristics of concrete.

Author Biographies

Nina Dmytriieva, Odessa State Academy of Civil Engineering and Architecture, 4, Didrikhsona str., Odessa, Ukraine, 65029

PhD, Associate Professor

Department of Construction Production Technology

Irina Agafonova, Bender Polytechnic Branch of Transnistrian State University named after T. G. Shevchenko, 7, Benderskoho povstannia str., Bendery, Moldova, 60940

Senior Lecturer

Department of Civil Engineering and Economics

Nina Bostan, Bender Polytechnic Branch of Transnistrian State University named after T. G. Shevchenko, 7, Benderskoho povstannia str., Bendery, Moldova, 60940

Senior Lecturer

Department of Civil Engineering and Economics

References

  1. Al Bakri, A. M. M., Abdulkareem, O. A., Rafiza, A. R., Zarina, Y., Norazian, M. N., Kamarudin, H. (2013). Review on Processing of Low Calcium Fly Ash Geopolymer Concrete. Australian Journal of Basic and Applied Sciences, 7 (5), 342–349.
  2. Duan, P., Yan, C., Zhou, W. (2016). Influence of partial replacement of fly ash by metakaolin on mechanical properties and microstructure of fly ash geopolymer paste exposed to sulfate attack. Ceramics International, 42 (2), 3504–3517. doi: http://doi.org/10.1016/j.ceramint.2015.10.154
  3. Kasimov, A. M., Udalov, I. V. (2015). Issledovanie protsessov migratsii ionov tiazhelykh i redkikh metallov v pochvakh v zone razmescheniia nakopitelei zoloshlakov ugolnykh TES. Vіsnik Kharkіvskogo natsіonalnogo unіversitetu іmenі V. N. Karazіna, 43, 188–200.
  4. Ob utverzhdenii Strategii razvitiia Pridnestrovskoi Moldavskoi Respubliki na 2019–2026 god. Available at: http://president.gospmr.org/pravovye-akty/ukazi/ob-utverjdenii-strategii-razvitiya-pridnestrovskoy-moldavskoy-respubliki-na-2019-2026-godi.html
  5. Doklad o sostoianii okruzhaiuschei sredy v Pridnestrovskoi Moldavskoi Respubliki v 2017 g. (2018). Tiraspol, 68. Available at: http://gseco.gospmr.org/information/otchet/doklad-okr-sreda-2017.pdf
  6. Iung, V. N. (1951). Osnovy tekhnologii viazhuschikh veschestv. Moscow: Promstroiizdat, 355.
  7. Butt, Iu. M., Bakshutov, B. C., Iliukhin, V. V. (1972). O nekotorykh svoistvakh kristallov i srostkov gidrosilikatov kaltsiia i portlandita. Eksperimentalnye issledovaniia v sukhikh okisnykh i silikatnykh sistemakh. Moscow: Nauka, 165–171.
  8. Bazhenov, Iu. M., Demianova, V. S., Kalashnikov, V. I. (2006). Modifitsirovannye vysokokachestvennye betony. Moscow: Assotsiatsiia stroitelnykh vuzov, 368.
  9. Dvorkin, L. I., Dvorkin, O. L. (2007). Stroitelnye materialy iz otkhodov promyshlennosti. Rostov-on-Don: Feniks, 368.
  10. Chen, M., Blanc, D., Gautier, M., Mehu, J., Gourdon, R. (2013). Environmental and technical assessments of the potential utilization of sewage sludge ashes (SSAs) as secondary raw materials in construction. Waste Management, 33 (5), 1268–1275. doi: http://doi.org/10.1016/j.wasman.2013.01.004
  11. Kapustin, F. L. (2011). Tekhnologicheskie i ekologicheskie aspekty primeneniia zoly-unosa Reftinskoi GRES pri proizvodstve stroitelnykh materialov. Tekhnologii betonov, 7-8, 64–65.
  12. DBN V.2.6-98:2009. Betonni ta zalizobetonni konstruktsii. Osnovni polozhennia. Available at: https://dbn.co.ua/load/normativy/dbn/1-1-0-792
  13. DSTU BV.2.7-176:2008. Budivelni materialy. Sumishi betonni ta beton. Zahalni tekhnichni umovy. Available at: http://gost.at.ua/_ld/33/3339_dstu-b-v.2.7-17.pdf

Downloads

Published

2020-10-31

How to Cite

Dmytriieva, N., Agafonova, I., & Bostan, N. (2020). Research for modification of concrete with ash-containing waste of Dnistrovska PSPS (Ukraine). Technology Audit and Production Reserves, 5(3(55), 31–34. https://doi.org/10.15587/2706-5448.2020.214781

Issue

Vol. 5 No. 3(55) (2020): Chemical engineering

Section

Reports on research projects

License

Copyright (c) 2020 Nina Dmytriieva, Nina Bostan, Irina Agafonova

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.