The VTI National Transport Library Catalogue

Correlations between Superpave asphalt stiffnesses and in-service pavement performance Galal, Khaled A ; White, Thomas D

By: Galal, Khaled AContributor(s): White, Thomas DPublication details: Transportation Research Record, 2001Description: nr 1766, s. 57-66Subject(s): USA | Bitumen | Binder | Stiffness | | In situ | Flexible pavement | Bituminous mixture | Deformation | | Cracking | Cold | Temperature | | 51Bibl.nr: VTI P8167:1766Location: Abstract: One of the primary concerns in the state of Indiana is the early appearance of flexible pavement distresses. Early distresses may result in pavement failure, shorter pavement service life, or both. The Strategic Highway Research Program-developed Superpave asphalt binder specifications are directed toward in-service pavement performance. Superpave binder tests and associated criteria were selected to control distresses that affect in-service hot-mix asphalt performance, specifically, permanent deformation, fatigue cracking, and low-temperature thermal cracking. The Indiana Department of Transportation was interested in whether or not the changes in in-service asphalt can be related to pavement distresses. Several factors were examined, including the type and severity of distresses as documented by pavement condition surveys. Also, Superpave asphalt binder tests were conducted on the original and the recovered in-service binders. One important aspect of the study was how the changes of in-service asphalts can be related to such distresses as permanent deformation, fatigue cracking, or low-temperature thermal cracking. This study documents the relationship among in-service asphalt binder stiffnesses, as characterized by complex shear modulus or binder stiffness (G*), and in-service permanent deformation and cracking, as characterized by pavement maintenance management system deduct values. The study documents a poor relationship between in-service binder stiffness and in-service permanent deformation or rutting. The study also documents a good relationship between in-service stiffness and in-service cracking.
Item type: Reports, conferences, monographs
Current library Call number Status Date due Barcode
Statens väg- och transportforskningsinstitut

VTI:s bibliotek i Linköping
bibliotek@vti.se

Available

One of the primary concerns in the state of Indiana is the early appearance of flexible pavement distresses. Early distresses may result in pavement failure, shorter pavement service life, or both. The Strategic Highway Research Program-developed Superpave asphalt binder specifications are directed toward in-service pavement performance. Superpave binder tests and associated criteria were selected to control distresses that affect in-service hot-mix asphalt performance, specifically, permanent deformation, fatigue cracking, and low-temperature thermal cracking. The Indiana Department of Transportation was interested in whether or not the changes in in-service asphalt can be related to pavement distresses. Several factors were examined, including the type and severity of distresses as documented by pavement condition surveys. Also, Superpave asphalt binder tests were conducted on the original and the recovered in-service binders. One important aspect of the study was how the changes of in-service asphalts can be related to such distresses as permanent deformation, fatigue cracking, or low-temperature thermal cracking. This study documents the relationship among in-service asphalt binder stiffnesses, as characterized by complex shear modulus or binder stiffness (G*), and in-service permanent deformation and cracking, as characterized by pavement maintenance management system deduct values. The study documents a poor relationship between in-service binder stiffness and in-service permanent deformation or rutting. The study also documents a good relationship between in-service stiffness and in-service cracking.

Powered by Koha