<div class="csl-bib-body">
<div class="csl-entry">Hofko, B., Alavi, M. Z., Grothe, H., Jones, D., & Harvey, J. (2017). Repeatability and sensitivity of FTIR ATR spectral analysis methods for bituminous binders. <i>Materials and Structures</i>. https://doi.org/10.1617/s11527-017-1059-x</div>
</div>
Bituminous binders as organic materials are prone to aging mainly by oxidation. Aging changes the viscoelastic behavior of the material over time towards higher stiffness and brittleness. FTIR has been increasingly used lately to investigate impacts of oxidative aging on the chemical structure of bitumen. Especially the carbonyl and sulfoxide bands are affected by aging and commonly used to describe changes due to evolving oxidation of a binder. However, spectra obtained from FTIR can be analyzed in fundamentally different ways and the analysis method applied to a spectrum has an impact on the gathered results and especially on the repeatability and sensitivity with regards to oxidative changes. For the presented study, two bituminous binders, a PG 64-16 and an SBS modified PG 76-22 PM were aged by RTFO and PAV and subsequently measured by FTIR. The obtained spectra (up to 90 individual spectra per aging state) were analyzed employing various methods using either the original or a normalized spectrum, a band maximum or integration based calculation of indices from an absolute or tangential baseline. By analyzing the coefficient of variation of the different analysis methods, it was found that not all analysis methods exhibit the same repeatability and sensitivity. From the findings of the study it can be recommended to work with normalized spectra, use an absolute baseline and work with integration of areas for index production in favor over band maximum based methods.
en
dc.language
English
-
dc.language.iso
en
-
dc.publisher
Springer
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dc.relation.ispartof
Materials and Structures
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dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
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dc.subject
Bitumen
en
dc.subject
Asphalt
en
dc.subject
Aging
en
dc.subject
Oxidation
en
dc.subject
Infrared spectroscopy
en
dc.subject
FTIR
en
dc.subject
Chemical composition
en
dc.title
Repeatability and sensitivity of FTIR ATR spectral analysis methods for bituminous binders
en
dc.type
Article
en
dc.type
Artikel
de
dc.rights.license
Creative Commons Namensnennung 4.0 International
de
dc.rights.license
Creative Commons Attribution 4.0 International
en
dc.contributor.affiliation
UCPRC, University of California, Davis, USA
-
dc.contributor.affiliation
UCPRC, University of California, Davis, USA
-
dc.contributor.affiliation
UCPRC, University of California, Davis, USA
-
dc.rights.holder
The Author(s) 2017
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dc.type.category
Original Research Article
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tuw.journal.peerreviewed
true
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tuw.peerreviewed
true
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tuw.version
vor
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wb.publication.intCoWork
International Co-publication
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dcterms.isPartOf.title
Materials and Structures
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tuw.publication.orgunit
E230 - Institut für Verkehrswissenschaften
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tuw.publication.orgunit
E165 - Institut für Materialchemie
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tuw.publisher.doi
10.1617/s11527-017-1059-x
-
dc.identifier.eissn
1871-6873
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dc.identifier.libraryid
AC15188649
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dc.identifier.urn
urn:nbn:at:at-ubtuw:3-4316
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tuw.author.orcid
0000-0002-8329-8687
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tuw.author.orcid
0000-0002-2715-1429
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dc.rights.identifier
CC BY 4.0
de
dc.rights.identifier
CC BY 4.0
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wb.sci
true
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item.languageiso639-1
en
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item.fulltext
with Fulltext
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item.openaccessfulltext
Open Access
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item.openairetype
research article
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item.grantfulltext
open
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item.openairecristype
http://purl.org/coar/resource_type/c_2df8fbb1
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item.cerifentitytype
Publications
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crisitem.author.dept
E230-03 - Forschungsbereich Straßenwesen
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crisitem.author.dept
UCPRC, University of California, Davis, USA
-
crisitem.author.dept
E165-01-5 - Forschungsgruppe Physikalische Chemie von Aerosolpartikeln