Rheological investigation and optimization of crumb rubber-modified bitumen production conditions in the plant and laboratory

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dc.authorid0000-0002-7496-6006
dc.contributor.authorKok, Baha Vural
dc.contributor.authorOzdemir, Ahmet Munir
dc.date.accessioned2026-02-08T15:15:46Z
dc.date.available2026-02-08T15:15:46Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractAmong the various bitumen additives, crumb rubber (CR) derived from waste tires stands out due to its economic and environmental advantages. The effectiveness of CR modification is influenced by several factors, including temperature, mixing speed, duration, and particle size. Excessive mixing speed and prolonged mixing in laboratory conditions can lead to the depolymerization of CR, which may adversely affect the elastic properties of the bitumen. In contrast, plant-scale production typically follows a more rapid and simplified process. In this study, bitumen containing 8% CR, modified under plant and laboratory conditions with varying mixing speeds and durations, was rheologically analyzed. Temperature and frequency sweep tests were conducted using a dynamic shear rheometer, and master curves were generated to evaluate the bitumen's viscoelastic behavior through various rheological models. The findings indicate that higher mixing speeds and extended mixing durations in laboratory conditions increase bitumen stiffness; however, excessive mixing leads to depolymerization, thereby reducing its elastic properties. The laboratory-produced CR modification demonstrates significantly superior performance compared to that generated in the plant. Furthermore, response surface methodology optimization analysis results indicate that the ideal conditions for mixing are a speed range of 3,000-4,000 rpm and a duration of 45-60 min.
dc.identifier.doi10.1515/arh-2025-0048
dc.identifier.issn1430-6395
dc.identifier.issn1617-8106
dc.identifier.issue1
dc.identifier.scopus2-s2.0-105009263551
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.1515/arh-2025-0048
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5958
dc.identifier.volume35
dc.identifier.wosWOS:001514086700001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherDe Gruyter Poland Sp Z O O
dc.relation.ispartofApplied Rheology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzWOS_KA_20260207
dc.subjectbitumen
dc.subjectrheology
dc.subjectcrumb rubber
dc.subjectmixing conditions
dc.subjectmaster curve
dc.titleRheological investigation and optimization of crumb rubber-modified bitumen production conditions in the plant and laboratory
dc.typeArticle

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