Soft bitumen asphalt produced using RAP

Jonas Ekblad

doi:10.1617/s11527-016-0871-z

2016-08-10

Jonas Ekblad *

Robert Lundström

DOI：10.1617/s11527-016-0871-z

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摘要

En 中文

Soft bitumen asphalt concrete is a common paving material in Scandinavia. The purpose of this investigation was to indicate the possibility to compensate for the stiff binder of reclaimed asphalt pavement ( RAP) by using softer binders compared to the mix design. Characterization of binder mixing and diffusion were carried out using viscosity measurements and tests on asphalt concrete comprised stiffness modulus and cyclic compression testing. Acquired results suggest that virgin and reclaimed binders mix and the viscosity can be predicted using simple mixing models. In the case of asphalt made from mixing virgin and recycled material, the mechanical properties indicates fully mixed binders and mixing occurs during sample manufacturing. In general, this study suggests that soft asphalt mixtures can be produced using RAP and that nominal binder viscosity of the final product can be obtained by compensating the stiff binder of the RAP by virgin bitumen of a softer grade.

Keyword:

Soft bitumen

Mixing model

Diffusion

Reclaimed asphalt

Equiviscous

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期刊

Materials and Structures

IF:

3.9

论文数:

4.4K

被引数:

1.7W

机构

Royal Institute of Technology

学者数:

1.8W

论文数: 1.8W

被引数: 25

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