Campus Units

Civil, Construction and Environmental Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

2-2014

Journal or Book Title

Rheologica Acta

Volume

53

Issue

2

First Page

143

Last Page

157

DOI

10.1007/s00397-013-0748-9

Abstract

The demand for more safe and durable roads, combined with the need to preserve the environment, led to the production and application of asphalt–rubber (AR) on roads. Nevertheless, this complex material needs further study in order to better distinguish among the phenomena that take place during AR production, as they impact on the final product characteristics. Here, we effectively quantify the rheological changes related to bitumen aging due to diffusion of small molecules of bitumen into the rubber particles and to the release of fillers from rubber into the bitumen during AR production. “A sphere AR production simulator” was developed to assess AR aging independently. The comparison of the characteristic relaxation times of both AR and simulated AR shows that the aging alone cannot explain the rheological changes during AR production. The extent of the changes related to the combined effects of aging and filler release increases as the bitumen used to produce AR is softer.

Research Focus Area

Structural Engineering, Transportation Engineering

Comments

This is an Accepted Manuscript of an article published by Taylor & Francis as Peralta, Joana, Loic Hilliou, Hugo MRD Silva, Ana V. Machado, and R. Christopher Williams. "Rheological changes in the bitumen caused by heating and interaction with rubber during asphalt–rubber production." Rheologica Acta 53, no. 2 (2014): 143-157." Available online: https://doi.org/10.1007/s00397-013-0748-9.

Copyright Owner

Springer Berlin Heidelberg

Language

en

File Format

application/pdf

Published Version

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