Print Email Facebook Twitter Non-Newtonian behaviors of crumb rubber-modified bituminous binders Title Non-Newtonian behaviors of crumb rubber-modified bituminous binders Author Wang, H. (TU Delft Pavement Engineering) Liu, X. (TU Delft Pavement Engineering) Apostolidis, P. (TU Delft Pavement Engineering) Scarpas, Athanasios (TU Delft Pavement Engineering; Petroleum Institute) Date 2018-09-29 Abstract Crumb rubber-modified bitumen (CRMB) has been utilized in the asphalt paving industry for decades due to its various benefits. The complex interaction between bitumen and crumb rubber as well as the addition of warm-mix additives makes the typical laws of Newtonian fluids insufficient to describe the behaviors of highly modified bituminous binders. To systematically explore the non-Newtonian behaviors of CRMB, a dynamic shear rheometer was utilized to apply shear loading on the samples at various temperatures and shear rates. Results show that the viscosity of different binders are highly temperature- and shear rate-dependent, while highly modified binders exhibit more obvious shear-thinning behaviors at certain temperatures. With the help of zero shear viscosity and yield stress, the shear-thinning behaviors of non-Newtonian binders can be sufficiently characterized. The Arrhenius equation is invalid to describe viscosity-temperature characteristics of bitumen in the non-Newtonian region. A second-order polynomial function was proposed to characterize the viscosity-temperature dependence with a high correlation degree. Subject BitumenCrumb rubber modifier (CRM)Non-Newtonian behaviorViscosityWarm mix asphalt To reference this document use: http://resolver.tudelft.nl/uuid:c6ac0c9f-6a92-447a-8e22-62289059d4b3 DOI https://doi.org/10.3390/app8101760 Source Applied Sciences, 8 (10) Part of collection Institutional Repository Document type journal article Rights © 2018 H. Wang, X. Liu, P. Apostolidis, Athanasios Scarpas Files PDF applsci_08_01760.pdf 3.25 MB Close viewer /islandora/object/uuid:c6ac0c9f-6a92-447a-8e22-62289059d4b3/datastream/OBJ/view