Early thermodegradation of bituminous sealants resulting from improper installation : field study

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DOIResolve DOI: http://doi.org/10.3141/1991-14
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TypeArticle
Journal titleTransportation Research Record
Issue1991
Pages119123; # of pages: 5
SubjectPavements
AbstractBituminous sealants used in roadway maintenance often have a short effective service life, in great part as a result of improper installation and heating, in particular. To determine the effect of thermal history on sealant characteristics, sealant samples were collected during an operation that started with reheating of a full kettle of bituminous sealant. Results of Fourier transform infrared spectroscopy, thermogravimetry, gel permeation chromatography, and dynamic shear rheometry showed that the sealant had degraded and that the extent of degradation was greatest early in the operation. Application of degraded sealant throughout installation showed the need for improved material and construction specifications, along with improved field control measures.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number50063
19119
NPARC number20377698
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Record identifierc919d94c-388c-4da7-8ae7-e78e900ced6a
Record created2012-07-24
Record modified2016-05-09
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