Investigates how industrial by-products modify natural bitumen's properties, suggesting effective local material use in roads.
This paper investigates the effect of gossypol resin, rubber crumb, and regenerated waste oil on the properties and ageing behavior of natural liquid bitumen from Tajikistan. FTIR spectroscopy was used to analyze structural changes before and after heating at 160 °C. The results show that the additives influence bitumen structure and oxidation resistance. Complex-modified systems exhibited improved stability and slower ageing compared to pure bitumen, while some single-additive compositions showed higher degradation. The findings confirm that combined modifiers can enhance bitumen performance and promote the use of local materials in road construction.
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Sayrakhmonov et al. (2026) studied this question.
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