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Article Dans Une Revue Rheologica Acta Année : 2011

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

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Résumé

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.

Dates et versions

hal-00579563 , version 1 (24-03-2011)

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