Deformation and tracking in bituminous sealants in summer temperatures: pseudo-field behavior

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TypeArticle
Journal titleInternational Journal of Pavement Engineering
Volume9
IssueMarch 1
Pages18; # of pages: 8
Subjectpavement, maintenance, sealants, tracking, deformation, performance; Roads/Pavement; Pavements
AbstractThe bituminous sealants used in the maintenance of roadways sometimes fail due to the excessive deformation or flow under the shearing action of tires in summer temperatures. To address this issue, a small-scale tracking test was developed and applied to twenty-one sealants held at temperatures between 46°C and 82°C, typical temperature maxima in North America. The results indicate that sealant shear deformation increase linearly or non-linearly with temperature, and that above a temperature threshold, sealants deform excessively and track. The tracking temperature is readily identified. Some sealants tracked at fairly low temperatures, 46°C to 64°C, but most sealants only tracked at 76°C or beyond. It is concluded that the tracking temperature may be a suitable specification parameter to assist in the selection of sealants with resistance to tracking.
Publication date
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number48650
17937
NPARC number20377567
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Record identifier6f05376a-cffa-4641-a681-8c61e654cd73
Record created2012-07-24
Record modified2016-05-09
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