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Correlation between thermal and rheological studies to characterize the behavior of bitumen

Abstract : The objective of this work is a comprehensive thermo-rheological study of pure bitumen. The bitumen is a complex material consisting of asphaltenes dispersed in a maltene matrix. As a consequence, its flow behavior is characterized by the presence of a yield stress, which depends on temperature below 50°C. Applying the Cox-Merz rule, a master curve of viscosity can be obtained over a wide range of shear rates for temperatures above 50°C. It can be accurately modeled by a Carreau-Yasuda law with a yield stress. This specific rheological behavior can be explained by the changes induced by the temperature on the microstructure, evidenced by modulated differential scanning calorimetry measurements.
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Submitted on : Thursday, March 24, 2011 - 11:26:53 AM
Last modification on : Thursday, September 24, 2020 - 5:22:55 PM

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Mouhamad Mouazen, Arnaud Poulesquen, Bruno Vergnes. Correlation between thermal and rheological studies to characterize the behavior of bitumen. Rheologica Acta, Springer Verlag, 2011, 50 (2), pp.169-178. ⟨10.1007/s00397-011-0534-5⟩. ⟨hal-00579563⟩

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