TY - JOUR
T1 - Relationship between Asphalt Binder Parameters and Asphalt Mixture Rutting
AU - Salim, Ramadan
AU - Gundla, Akshay
AU - Zalghout, Ali
AU - Underwood, Benjamin Shane
AU - Kaloush, Kamil E.
N1 - Funding Information:
The authors acknowledge the Arizona Department of Transportation for supporting and funding the study. The authors also specifically acknowledge the contributions of the Technical Advisory Committee: Dharminder (Paul) Sharma, Julie Kliewer, Paul Burch, Dan Anderson, Jessica Banner, Bob McGennis, Mohammad Rahman, and Sam Huddleston, as well as the manager for this project, Kohinoor Kar, and Aaron Robert for assisting in the HWTT.
Publisher Copyright:
© National Academy of Sciences: Transportation Research Board 2019.
PY - 2019/6/1
Y1 - 2019/6/1
N2 - The selection and specification of asphalt binder is one of the factors that ultimately affect the long-term performance of asphalt pavements. Many agencies currently follow AASHTO M320 for their binder specifications, where the ratio of dynamic modulus to the sine of the phase angle, |G*|/sinδ, is the binder rutting parameter. However, an alternative now exists, AASHTO M332, which uses the non-recovered creep compliance, J nr, for this purpose. In this paper, the relative merits of these two parameters are compared using experimental results from 21 different asphalt mixtures from Arizona. The rutting parameters according to AASHTO M332 and M320 were determined for each of the binders in these mixtures and, for each mixture, two rutting performance tests were conducted: Hamburg wheel tracking test and repeated load permanent deformation test. The two binder rutting parameters demonstrated very high correlation to one another for non-polymer modified asphalts, but inconsistent correlation for polymer modified asphalts. Both Hamburg wheel tracking tests and repeated load permanent deformation tests showed positive correlations to both |G*|/sinδ and Jnr. It was concluded that, while both parameters showed good correlation, the Jnr of the binder relates better to mixture rutting than does |G*|/sinδ. Considering the results in this study, it is believed that Jnr is a slightly better rutting parameter for binder specifications.
AB - The selection and specification of asphalt binder is one of the factors that ultimately affect the long-term performance of asphalt pavements. Many agencies currently follow AASHTO M320 for their binder specifications, where the ratio of dynamic modulus to the sine of the phase angle, |G*|/sinδ, is the binder rutting parameter. However, an alternative now exists, AASHTO M332, which uses the non-recovered creep compliance, J nr, for this purpose. In this paper, the relative merits of these two parameters are compared using experimental results from 21 different asphalt mixtures from Arizona. The rutting parameters according to AASHTO M332 and M320 were determined for each of the binders in these mixtures and, for each mixture, two rutting performance tests were conducted: Hamburg wheel tracking test and repeated load permanent deformation test. The two binder rutting parameters demonstrated very high correlation to one another for non-polymer modified asphalts, but inconsistent correlation for polymer modified asphalts. Both Hamburg wheel tracking tests and repeated load permanent deformation tests showed positive correlations to both |G*|/sinδ and Jnr. It was concluded that, while both parameters showed good correlation, the Jnr of the binder relates better to mixture rutting than does |G*|/sinδ. Considering the results in this study, it is believed that Jnr is a slightly better rutting parameter for binder specifications.
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U2 - 10.1177/0361198119842129
DO - 10.1177/0361198119842129
M3 - Article
AN - SCOPUS:85067847042
SN - 0361-1981
VL - 2673
SP - 431
EP - 446
JO - Transportation Research Record
JF - Transportation Research Record
IS - 6
ER -