Insights into Polymerization-induced Phase Separation of Epoxy-Bitumen Systems and Strategies to Tailor High-Performance Bituminous Materials

Conference paper (2019)

Authors

P. Apostolidis Pavement Engineering - CEG
Sayeda Nahar Latexfalt B.V.
X. Liu Pavement Engineering - CEG
Bert-Jan Lommerts Latexfalt B.V.
Sandra Erkens Pavement Engineering - CEG
S. Erkens Pavement Engineering - CEG
Athanasios Scarpas Pavement Engineering - CEG , Khalifa University of Science and Technology
Research Group
Pavement Engineering (CEG) (TU Delft)
Copyright: © 2019 P. Apostolidis, Sayeda Nahar, X. Liu, Bert-Jan Lommerts, S. Erkens, Athanasios Scarpas
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Published Date

2019

Language

English

Reuse Rights

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Pavement Engineering

Abstract

The utilization of epoxy-based polymers as bituminous modifiers in developing durable and long-lasting pavement structures have gained increasing interest over the last years showing evidence of high performing materials (1-8). It has been noticed that the addition of epoxy-based modifier into bitumen lead to materials with superior characteristics against oxidative aging (1, 3, 8). Next to aging resistance, the incorporation of epoxy modifiers in bituminous materials has added functional benefits, such as improved resistance to moisture damage and fatigue cracking (5, 6). Despite the evidence of aging resistance in epoxy-asphalt concrete mixes, the influence of the epoxy-based polymers on the bitumen aging and the microstructure morphology of newly formed systems have not been fundamentally evaluated yet. Within the scope of this research, the aging susceptibility of epoxy modified bitumen has been investigated. The extent of aging has been probed by using a Fourier Transform Infrared spectrometer and also rheologically evaluated using a dynamic shear rheometer. Furthermore, an improved compatibility between epoxy and bitumen at the microstructural level defines the long-term chemo-mechanical performance of EB systems in a controlled manner. Thus, another aspect of this study was to investigate the morphological and interfacial characteristics of EB microstructure.

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