APPLICATION OF SECONDARY RUBBER WASTE IN UZBEKISTAN FOR THE PRODUCTION OF HYDROINSULATION CONSTRUCTION MATERIALS

Karimov Rustamjon Ibragimovich

Authors

Karimov Rustamjon Ibragimovich Assistant, Department of Materials Science, Andijan State Technical Institute, Andijan, Uzbekistan

Keywords:

secondary rubber waste; tire recycling; hydroinsulation materials; crumb rubber; rubberized bitumen; circular economy; construction materials; Uzbekistan; sustainable construction; waste management.

Abstract

This study presents a systematic analysis of the application of secondary rubber waste in the production of hydroinsulation construction materials suitable for the climatic and economic conditions of Uzbekistan. The methodology combines a comprehensive literature review of 48 peer-reviewed publications (2018–2024), an evaluation of three principal rubber-processing technologies (ambient grinding, cryogenic grinding, and pyrolysis), and a comparative property assessment of conventional and rubber-modified hydroinsulation materials. The results demonstrate that incorporation of 15–25 wt.% crumb rubber into bitumen-based hydroinsulation compounds increases elasticity by 35–60 %, extends elongation at break from 250 % to 500–800 %, and broadens the operational temperature range from −25…+80 °C to −40…+95 °C.

References

World Business Council for Sustainable Development (WBCSD). End-of-Life Tires: A Framework for Effective Management Systems. Geneva: WBCSD, 2022, 64 p.

Sienkiewicz M., Kucinska-Lipka J., Janik H., Balas A. Progress in used tyres management in the European Union: A review. Waste Management, 2012, vol. 32, no. 10, pp. 1742–1751. DOI: 10.1016/j.wasman.2012.05.010.

Forrest M.J. Recycling and Re-use of Waste Rubber. 2nd ed. Berlin: De Gruyter, 2019, 196 p.

Ministry of Ecology, Environmental Protection and Climate Change of the Republic of Uzbekistan. National Report on the State of the Environment and the Use of Natural Resources in 2023. Tashkent, 2024, 196 p.

State Committee on Statistics of the Republic of Uzbekistan. Construction Materials Market Review: Annual Bulletin 2023. Tashkent, 2024, 78 p.

Sienkiewicz M., Borzędowska-Labuda K., Zalewski S., Janik H. The effect of tyre rubber granulate size fraction on viscoelastic properties of bitumen-rubber composites. Construction and Building Materials, 2020, vol. 250, p. 118840. DOI: 10.1016/j.conbuildmat.2020.118840.

Pais J.C., Pereira P.A.A., Sousa J.B. The performance of asphalt mixtures with crumb rubber. International Journal of Pavement Engineering, 2022, vol. 23, no. 12, pp. 4067–4081. DOI: 10.1080/10298436.2021.1939041.

Garcia A., Partl M.N. How to transform bitumen and rubber to a high performance binder. Construction and Building Materials, 2019, vol. 213, pp. 638–649. DOI: 10.1016/j.conbuildmat.2019.04.045.

Karger-Kocsis J., Mészáros L., Bárány T. Ground tyre rubber (GTR) in thermoplastics, thermosets, and rubbers. Journal of Materials Science, 2013, vol. 48, no. 1, pp. 1–38. DOI: 10.1007/s10853-012-6564-2.

Williams P.T. Pyrolysis of waste tyres: A review. Waste Management, 2013, vol. 33, no. 8, pp. 1714–1728. DOI: 10.1016/j.wasman.2013.05.003.

Lo Presti D. Recycled tyre rubber modified bitumens for road asphalt mixtures: A literature review. Construction and Building Materials, 2013, vol. 49, pp. 863–881. DOI: 10.1016/j.conbuildmat.2013.09.007.

Akhmedov D.K., Yusupov A.A. Climate-adapted construction materials for the conditions of the Republic of Uzbekistan. Uzbek Journal of Construction and Architecture, 2023, no. 3, pp. 42–51.

Cong P., Xu P., Chen S. Effects of carbon black on the anti-aging, rheological and conductive properties of SBS/asphalt/carbon black composites. Construction and Building Materials, 2014, vol. 52, pp. 306–313. DOI: 10.1016/j.conbuildmat.2013.11.061.

European Tyre Recycling Association (ETRA). End-of-Life Tyres Management — Europe 2024 Report. Brussels: ETRA, 2024, 88 p.

Edoziuno F.O., Madamori H., Nwaeju C.C. Industrial waste utilization for construction materials in developing countries: Comparative case studies. International Journal of Engineering Research in Africa, 2023, vol. 64, pp. 21–38. DOI: 10.4028/p-h7w2y0.

Decree of the President of the Republic of Uzbekistan No. PF-78 of October 14, 2022, "On accelerating the transition to a green economy until 2030". Available at: https://lex.uz/docs/-6240094 (accessed: 10.05.2024).