Modelling and optimization of viscoelastic flow behaviour of thermoplastic resin modified asphalt binder in dynamic shear domain

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dc.authorid0000-0002-4872-154X
dc.contributor.authorYurdakul, Hakan
dc.contributor.authorOzdemir, Ahmet Munir
dc.date.accessioned2026-02-08T15:15:10Z
dc.date.available2026-02-08T15:15:10Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn response to the increasing demand for high-temperature durability in asphalt pavements, the modification of asphalt binders using thermoplastic resin (TPR) additives has gained attention due to their aromatic structure, chemical compatibility, and ability to improve rutting resistance. This study investigates the viscoelastic flow behavior and performance optimization of TPR-modified asphalt (TPRMA) binders through a comprehensive experimental and numerical modeling framework. A petroleum-derived thermoplastic resin was incorporated into a 70/100 penetration grade asphalt binder at different ratios (1 %, 3 %, 5 %, 7 %). Rheological characterization was performed using Dynamic Shear Rheometer (DSR) tests under a wide range of temperatures and frequencies. Master curves of complex viscosity were constructed using time-temperature superposition and fitted with Cross and Carreau-Yasuda models. Both models showed excellent agreement with experimental data (R-2>0.99), with 5 % TPR yielding the highest zero-shear viscosity and lowest critical shear rate. In the second phase of the study, Response Surface Methodology (RSM) was employed to optimize the G*/sin delta parameter, a critical indicator of rutting resistance. RSM model was developed (R-2=0.9922; p < 0.0001), and numerical optimization identified 5.702 % TPR at 64 degrees C as the optimum formulation, producing a predicted G*/sin delta value of 5453.91 Pa. Post-analysis confirmed the statistical reliability of the prediction, with tight confidence and tolerance intervals enclosing the target response. Regression coefficient analysis further emphasized the dominant effects of temperature, TPR content, and their interactions. Overall, the findings highlight that moderate dosages of thermoplastic resin, particularly around 5 %, significantly enhance the high-temperature performance of asphalt binders.
dc.identifier.doi10.1016/j.conbuildmat.2025.143578
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-105015776102
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2025.143578
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5650
dc.identifier.volume495
dc.identifier.wosWOS:001574690700001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofConstruction and Building Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectAsphalt binder
dc.subjectThermoplastic resin
dc.subjectRheology
dc.subjectDynamic shear rheometer
dc.subjectResponse surface methodology
dc.titleModelling and optimization of viscoelastic flow behaviour of thermoplastic resin modified asphalt binder in dynamic shear domain
dc.typeArticle

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