Experimental Investigation on the Use of Waste Elastomeric Polymers for Bitumen Modification

The study described in this paper focused on the possible use of waste products coming from the production of styrene–butadiene rubber (SBR) and polybutadiene rubber (PBR), as bitumen modifiers. Modified binders containing these products were prepared in the laboratory with different polymer dosages...

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Bibliographic Details
Published in:Applied sciences 2020-04, Vol.10 (8), p.2671
Main Authors: Yeganeh, Sadegh, Ameri, Mahmoud, Dalmazzo, Davide, Santagata, Ezio
Format: Article
Language:English
Subjects:
Aging
Binders
Bitumens
Butadiene
chemical characterization
Deformation effects
Elastomers
Fatigue strength
Fourier transforms
Laboratories
polybutadiene rubber
Polymer blends
polymer-modified binders
Polymers
Quality
rheological characterization
Rheological properties
Rheology
Rubber
Spectrum analysis
Styrene
styrene-butadiene rubber
Viscoelasticity
waste products
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Summary:The study described in this paper focused on the possible use of waste products coming from the production of styrene–butadiene rubber (SBR) and polybutadiene rubber (PBR), as bitumen modifiers. Modified binders containing these products were prepared in the laboratory with different polymer dosages and were thereafter subjected to the evaluation of empirical and rheological properties. For comparative purposes, the study also considered SBR and PBR products of premium quality. Ageing effects were also taken into account by means of proper laboratory simulations. Obtained results indicated that the two types of polymer (SBR and PBR) have completely different effects on the rheology and expected performance of the resulting modified binders. In particular, while the two polymers showed similar effects in terms of resistance to permanent deformation, the SBR products proved to be superior from the viewpoint of fatigue resistance. However, only minor differences were found when comparing the effects produced by premium quality and waste polymers. As a result of the experimental findings, it was concluded that the use of waste SBR polymers can be an attractive solution for the production of affordable modified binders.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10082671