Article Dans Une Revue Road Materials and Pavement Design Année : 2015

Molecular weight distribution of asphaltic paving binders from phase-angle measurements

Résumé

Based on previous works on polymers and regular bitumens, a new method for determining the molecular weight distribution (MWD) of asphaltic paving binders, using the phase angle (´) of the complex modulus measured in the linear viscoelastic domain, has been developed in this paper. MWDs of pure petroleum bitumens, natural bitumens, modified bitumens and arti-ficially aged bitumens are calculated by this method and compared with MWDs obtained by gel permeation chromatography. The two methods give comparable results, but the ´-method developed here is more sensitive to the molecular weight of species. This method is very simple to implement, and seems a powerful tool in the determination of MWD of bitumens, in the visualisation and repartition of modifiers in the bitumen matrix and in the ageing monitoring and quantification.

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Dates et versions

hal-01471745 , version 1 (20-02-2017)

Identifiants

Citer

Andréa Themeli, Emmanuel Chailleux, Fabienne Farcas, Cyrille Chazallon, Bernard Migault. Molecular weight distribution of asphaltic paving binders from phase-angle measurements. Road Materials and Pavement Design, 2015, 16 (S1), pp. 228-244. ⟨10.1080/14680629.2015.1029667⟩. ⟨hal-01471745⟩
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