The work presented attempts to address reflective cracking of asphalt-surfaced pavements through binder modification with a highly polymer (HP)-modified asphalt binder. Nine asphalt mixtures ranging from fine dense-graded mixtures to stone matrix asphalt (SMA) mixtures were investigated with conventional polymer modified binders and HP binder. The dynamic modulus test, overlay test (OT), and semi-circular bend (SCB) test were used to evaluate the mixtures. In the cracking tests, HP mixtures outperformed the conventionally modified control mixtures for the same mixture type. For HP mixtures, in general, SMA mixtures performed better in the cracking test than dense-graded mixtures. One of the dense-graded mixtures having larger nominal maximum aggregate size (NMAS) performed better than the mixture with a smaller NMAS, whereas the other having a larger NMAS was not significantly different in crack testing. Further, a discussion on the calculation of bulk specific gravity and percent air voids in a cut OT and SCB specimen using saturated surface dry or vacuum sealing methods is presented.
Laboratory Evaluation of Mixture Type on Highly Modified Asphalt Mixtures in Virginia
Transportation Research Record
Transportation Research Record: Journal of the Transportation Research Board ; 2672 , 28 ; 59-68
2018-09-09
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Laboratory Investigation of Biochar-Modified Asphalt Mixture
Transportation Research Record | 2014
|PART 2 -- ASPHALT MIXTURES 2000 - Asphalt Permeability Testing in Virginia
Online Contents | 2000
|Laboratory Characterization of Additive-Modified Asphalt Concrete Mixtures
Transportation Research Record | 2024
|