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Evaluation of performance tests on bitumens
Proceedings of 6th Eurasphalt & Eurobitume Congress,1st - 3rd June 2016
- Category: Článek ve sborníku (Article in the proceedings)
- Author: Černý Radek, Plitz Jiří, Vacín Otakar
- ISBN: 978-80-01-05962-3
- Year: 2016
- Link: URL
- DOI: dx.doi.org/10.14311/EE.2016.370
Review
The trend in modern pavements is moving towards bitumens with higher performance for longer term service in roads. There is a demand for better strength and adhesion, lesser road maintenance and road closures. It can be observed large increase in traffic load and application of new techniques which require more innovative binders. Hand in hand with mentioned changes new material evaluation is taking place. Bitumen properties are more often characterized in relation to temperature, loading time, frequency, stress or deformation. One of the base flow techniques is a repeated creep that is measured with dynamic shear rheometer as a tool of study of bitumen viscoelastic properties. The method is under investigation currently and many road agencies worldwide applied the results in to the specifications. This paper deals of the use of dynamic mechanical analysis for better bitumen characterization at selected polymer modified bitumens as well as the evaluation of Multiple Stress Creep and Recovery Test based on proposed prEN 16659 standard.