Rheological and chemical characterization on the polymer modified bitumen with different rejuvenators
conference paper
The current commercially available rejuvenators are designed mostly for base bitumen and not suitable for the recycling of PMA. For this reason, this research aims at designing an innovative rejuvenator specifically for the recycling of PMA. Firstly, a series of performance-based test methods, including viscoelastic properties, rutting resistance, fatigue resistance, cracking resistance, relaxation ability and aging ability. Meanwhile, it was found that a series of performance-based evaluation methods can be used to determine the rejuvenator dosage in recycling. Finally, to reveal the rejuvenation mechanism, an environment scanning electron microscope (E-SEM) was utilized in investigating the microstructure of the rejuvenated binder. The results indicate that E-SEM method can distinguish the influence of rejuvenator dosage, rejuvenator type and addition of fresh bitumen on the morphology of aged PMB, which helps us to have a better understanding of the rejuvenation mechanism. (C) 2022 the Author(s).
Topics
TNO Identifier
981140
ISBN
9781032169545
Publisher
CRC Press/Balkema
Source title
Green and Intelligent Technologies for Sustainable and Smart Asphalt Pavements - Proceedings of the 5th International Symposium on Frontiers of Road and Airport Engineering, IFRAE 2021
Editor(s)
Liu, X.
Anupam, K.
Erkens, S.
Sun, L.
Ling, J.
Anupam, K.
Erkens, S.
Sun, L.
Ling, J.
Pages
133-138
Files
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