Complex bituminous binders, are current test methods suitable for?

Conference paper (2021)

Authors

Laurent Porot Kraton Polymers B.V.
Emmanuel Chailleux Gustave Eiffel University
P. Apostolidis Pavement Engineering - CEG
Jiqing Zhu Swedish National Road and Transport Research Institute
Alexandros Margaritis Universiteit Antwerpen
Lucia Tsantilis Politecnico di Torino
Research Group
Pavement Engineering (CEG) (TU Delft)
Copyright: © 2021 Laurent Porot, Emmanuel Chailleux, P. Apostolidis, Jiqing Zhu, Alexandros Margaritis, Lucia Tsantilis
Rheology Bitumen Chemistry Polymer modified Bitumen Asphalt additive BBR Test protocol
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Published Date

2021

Language

English

Reuse Rights

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Pavement Engineering

Abstract

The asphalt industry is constantly working to enhance the performances of asphalt materials, introducing innovative and more sustainable solutions. In this context, the incorporation of materials, such as additives, polymers, is more and more used to improve the properties of neat bitumen. This leads to even more complex bituminous binders, raising the question, are the current specifications and test methods appropriate for complex materials? To deal with this, the RILEM Technical Committee 272-PIM ‘Phase and Interphase behaviour of innovative bi-tuminous Materials’ with its Task Group TG1 is looking at the efficiency of vari-ous test methods for complex binders with an extensive inter-laboratory program with 17 laboratories. It includes seven different binders, two neat bitumen, two polymer modified bitumen and three binders with liquid additives, emphasising on compositional and physical changes at different conditions. The focus is low temperature; while a complementary experimental program encompasses as well as testing at intermediate and high temperatures. The outcomes of the work will provide indications on how robust the current binder characterisation techniques are and establish technical recommendations for future test methods specially de-signed for complex binders. Some first results are presented hereby.