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Soft bitumen asphalt produced using RAP
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.ORCID iD: 0000-0002-7692-714X
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
2017 (English)In: Materials and Structures, ISSN 1359-5997, E-ISSN 1871-6873, Vol. 50, no 1, 13Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Springer, 2017. Vol. 50, no 1, 13
Keyword [en]
Diffusion, Equiviscous, Mixing model, Reclaimed asphalt, Soft bitumen, Asphalt, Asphalt mixtures, Binders, Bins, Bituminous materials, Characterization, Color image processing, Compression testing, Concrete mixing, Concrete testing, Concretes, Mixing, Reclamation, Viscosity, Viscosity measurement, Binder viscosity, Mix designs, Mixing models, Reclaimed asphalt pavements, Recycled materials, Stiffness moduli, Asphalt concrete
National Category
Civil Engineering
URN: urn:nbn:se:kth:diva-195114DOI: 10.1617/s11527-016-0871-zISI: 000385022400013ScopusID: 2-s2.0-84981719356OAI: diva2:1044802

Correspondence Address: Ekblad, J.; KTH Royal Institute of Technology, NCC Roads AB, Sweden; email: QC 20161107

Available from: 2016-11-07 Created: 2016-11-02 Last updated: 2016-11-11Bibliographically approved

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Ekblad, JonasLundström, Robert
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