Modelling of Flow Properties of Asphalt Mastics

Abstract:

The present research work deals with the examination and rheological modelling of flow properties of asphalt mastics which are the most important components of asphalt concretes. Asphalt mastics are mixtures of fine grained mineral filler particles (d<0,063 mm) and bitumen, having a stabilizing role in asphalt mixtures and largely determining the cohesion between mineral particles and bitumen. During our examinations two types of mineral fillers – limestone and dolomite – as well as standard bitumen were tested, which are extensively used in Hungarian road construction. Asphalt mastic mixtures were prepared out of these materials and they were tested with dynamic shear rheometer (DSR). According to the test results, rheological models of mastics were determined. It has been established that at different test temperatures and shear rate ranges asphalt mastics behave as Herschel-Bulkley and Bingham-type materials.

• Periodical: Materials Science Forum (Volume 752)
• Pages: 209-216
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.752.209
• Online since: March 2013
• Authors: Robert Geber, László A. Gömze
• Keywords: Asphalt Mastic, Filler, Flow Properties, Modeling, Rheology

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