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Evaluation of Environmental Susceptibility of Bituminous Mastic Viscosity as a Function of Mineral and Biomass Fillers:
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.
Griffith School of Engineering .
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.ORCID iD: 0000-0003-0889-6078
KTH, School of Architecture and the Built Environment (ABE), Transport Science, Highway and Railway Engineering.ORCID iD: 0000-0003-3968-6778
2013 (English)In: Transportation Research Record, ISSN 0361-1981, E-ISSN 2169-4052, no 2371, 23-31 p.Article in journal (Refereed) Published
Abstract [en]

Bituminous mastics influence many other important asphalt mixture properties in addition to their own allowance for the load transfer in the aggregate skeleton. The influence of bituminous mastics extents to the overall stability of a mixture, air void distribution, bitumen draindown during transport, a mixture's workability during the laying process, and the overall in-time performance of the pavement. To understand the properties of asphalt mixtures and their resistance to environmentally induced failure mechanisms, it is paramount to study not only bitumen and the asphalt mixture but also the mastic itself. Current asphalt design procedures do not take mastic behavior into account, however; this omission leads to a significant flaw in the ability to design and predict asphalt concrete response. This paper presents the results of an ongoing research project to enhance the understanding of the mastic phase as well as to develop a new test protocol to characterize mastics. A description is given of the measurements of mastic viscosity for different types of mastics in which the bitumen source is kept as a constant but with varying fillers as well as concentrations. Environmental susceptibility was investigated by subjecting the samples to aging and moisture conditioning. Biomass fillers were included in some of the mastics, in addition to some of the traditional fillers, to show their impact on the viscosity under varying conditions. Results showed that the developed test protocol was able to identify clearly the impact of filler properties on the mastic viscosity. A critical filler concentration was identified beyond which the viscosity behavior became nonlinear. The results also showed that moisture and aging had significant effects on the viscosity of mastics.

Place, publisher, year, edition, pages
2013. no 2371, 23-31 p.
Keyword [en]
Aggregate skeletons, Critical filler concentration, Failure mechanism, Filler properties, Mixture properties, Moisture conditioning, Overall stabilities, Viscosity behavior
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-107716DOI: 10.3141/2371-03ISI: 000329411200004Scopus ID: 2-s2.0-84890103165OAI: oai:DiVA.org:kth-107716DiVA: diva2:577738
Note

QC 20140130. Updated from accepted to published.

Available from: 2012-12-17 Created: 2012-12-17 Last updated: 2017-12-06Bibliographically approved
In thesis
1. On the viscosity of asphalt mastics
Open this publication in new window or tab >>On the viscosity of asphalt mastics
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. vii, 17 p.
Series
Trita-TSC-LIC, ISSN 1653-445X ; 13-010
Keyword
Asphalt mastics, viscosity, Filller, Filler properties, workability
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-138600 (URN)978-91-87353-24-6 (ISBN)
Presentation
2013-12-19, B25, KTH, Brinellvägen 23, Stockholm, 12:00
Opponent
Supervisors
Note

QC 20131220

Available from: 2013-12-20 Created: 2013-12-20Bibliographically approved
2. Characterisation and Modelling of Asphalt Mastic and Their Effect on Workability
Open this publication in new window or tab >>Characterisation and Modelling of Asphalt Mastic and Their Effect on Workability
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. v, 64 p.
Series
TRITA-TSC-PHD, 14:005
Keyword
Asphalt, Pavement, Mastics, Bitumen, Viscosity, Rheology, Filler, Filler-Bitumen Interaction, Workability, X-Ray CT.
National Category
Engineering and Technology
Research subject
Civil and Architectural Engineering
Identifiers
urn:nbn:se:kth:diva-150233 (URN)978-91-87353-46-8 (ISBN)
Public defence
2014-09-12, Kollegiesalen (the old chapel), brinellvägen 8, KTH, Stockholm, 09:00 (English)
Opponent
Supervisors
Note

QC 20140902

Available from: 2014-09-02 Created: 2014-09-01 Last updated: 2015-04-13Bibliographically approved

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Birgisson, BjörnKringos, Niki

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