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TEMPERATURE DEPENDENCE OF THE DYNAMIC VISCOSITY OF ASPHALT - POLYMER MIXTURES

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Author(s): Pavol Daučík | Marcela Hadvinová | Jozef Višňovský

Journal: Petroleum and Coal
ISSN 1337-7027

Volume: 53;
Issue: 4;
Start page: 238;
Date: 2011;
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Keywords: asphalt | polymers | viscosity | temperature dependence.

ABSTRACT
The present work dealt with the influence of polymer additives upon the reological properties ofasphalt. Six sample mixtures of 400 g asphalt with 16 g polymers (Kraton D1116, SBS rubberEuropren Sol T 6205; rubber crumb 0820A; ethylene-vinylacetate - EVA Elvax 350; polyethylene -PE Bralen SA200 and atactic polypropylene -APP) were prepared and their dynamic viscositymeasured using IKA-ULTRA-TURRAX® T 18 in the temperature range 103°C to 137°C. Dynamicviscosity of asphalt and different modified mixtures was experimentally determined and thencalculated using three mathematical models (exponential function, polynomial function andmodified Walter’s equation). The relative difference between the experimental and calculatedvalues of dynamic viscosity was determined and then used as applicability (suitability) criterion ofthe above mathematical models. Modified Walter’s equation has been found suitable to calculatethe dynamic viscosity at delimited temperatures.
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