Performance Evaluation of Asphalt Mixtures with High Recycled Asphalt Pavement Content

This study extensively evaluated the resistance to moisture damage and thermal cracking of hot-mix asphalt (HMA) mixtures with high recycled asphalt pavement (RAP) content (up to 50%) from field sections on provincial Highway 8 between Gimli and Hnausa in Manitoba, Canada. A comparison between the p...

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Bibliographic Details
Published in:Transportation research record 2011-01, Vol.2208 (1), p.72-81
Main Authors: Loria, Luis, Hajj, Elie Y., Sebaaly, Peter E., Barton, Matt, Kass, Said, Liske, Tara
Format: Article
Language:English
Subjects:
Acceptability
Asphalt
Cracking (fracturing)
Damage
Fracture mechanics
Moisture
Pavements
Recycled
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Summary:This study extensively evaluated the resistance to moisture damage and thermal cracking of hot-mix asphalt (HMA) mixtures with high recycled asphalt pavement (RAP) content (up to 50%) from field sections on provincial Highway 8 between Gimli and Hnausa in Manitoba, Canada. A comparison between the properties and performance of the field-produced and laboratory-produced mixtures was also conducted and was included in this study. HMA mixtures with 50% RAP resulted in acceptable resistance to moisture damage and thermal cracking. The use of multiple freeze–thaw cycles provided a better characterization of the mixtures' resistance to moisture damage. Acceptable correlations were observed between the estimated critical temperatures from the blending chart and the measured ones from the recovered asphalt binders. Overall, laboratory-produced mixtures could be used to evaluate the relative resistance of the field-produced mixtures to moisture damage and thermal cracking.
ISSN:0361-1981
2169-4052
DOI:10.3141/2208-10