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Sulfur as a supplementary filler for bitumen-silica composites
Authors:Gabrielle Fritschy  Eugène Papirer  Claude Chambu
Institution:(1) Centre de Recherches sur la Physico-Chimie des Surfaces Solides (C.N.R.S.), 24, Avenue du Président Kennedy, F-68200 Mulhouse, France;(2) Société Nationale Elf-Aquitaine, Centre de Recherche de Lacq, Artix, France
Abstract:Summary Dynamic-mechanical properties of bitumen-sulfur mixtures, containing more than 10% sulfur, change with time up to one month ageing. Composites were prepared by adding silica to these mixtures. In general, the time-temperature-superposition principle applies. Moreover, the viscoelastic properties of the bitumen matrix are not significantly altered by the presence of sulfur. However, the triple time-temperature-interfacial area equivalence principle could not be verified, in this instance, since the interfacial area between sulfur, the new filler, and bitumen could not be established.With 11 figures
Keywords:Bitumen  silica  sulfur  dynamic mechanical properties
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