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<p>The article presents the results of research on modification of off-grade BND 70/100-brand petroleum road bitumen using secondary granules of low-pressure polyethylene (LPPE), polypropylene, and polypropylene copolymer (PPC). Uniplast was used as a plasticizing additive. A comparative analysis of the physicomechanical properties of the original bitumen and of the samples obtained with addition of various concentrations of secondary polymers was carried out. It was established that LPPE and PPC can be used to get polymer-bitumen composites with characteristics that meet the GOST R 52056-2003 standard for PBB 40 polymer-bitumen binder brand as well as with heightened temperature parameters and extended plasticity range. Use of polypropylene did not help get samples meeting normal requirements. The obtained results confirm the possibility of effective secondary use of polymer wastes for improving road bitumen properties and developing new composite materials for road construction.</p>

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Study of the Influence of Secondary Granules of Polymer Wastes on Road Bitumen Properties

  • 期刊论文

  • 发表日期：

    2026年6月23日

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  • R. R. Yapaev,
  • P. Rakova,
  • E. S. Volkova,
  • E. V. Firsova,
  • A. F. Akhmetov

摘要

The article presents the results of research on modification of off-grade BND 70/100-brand petroleum road bitumen using secondary granules of low-pressure polyethylene (LPPE), polypropylene, and polypropylene copolymer (PPC). Uniplast was used as a plasticizing additive. A comparative analysis of the physicomechanical properties of the original bitumen and of the samples obtained with addition of various concentrations of secondary polymers was carried out. It was established that LPPE and PPC can be used to get polymer-bitumen composites with characteristics that meet the GOST R 52056-2003 standard for PBB 40 polymer-bitumen binder brand as well as with heightened temperature parameters and extended plasticity range. Use of polypropylene did not help get samples meeting normal requirements. The obtained results confirm the possibility of effective secondary use of polymer wastes for improving road bitumen properties and developing new composite materials for road construction.