Performance of Rubberized Asphalt Mixes in Alaska Document available through TRB Author(s): Saboundjian, Stephen & Radd, Lutfi Origin: Alaska Date: January, 1997 Categories: Performance Key Words: Asphalt rubber; Condition surveys; Crumb rubber; Deformation; Elastic analysis; Fatigue (Mechanics); Fatigue tests; Fracture mechanics; Low temperature; Performance; Performance evaluations; Rutting; Thermal stresses; Transverse cracking Summary: This study evaluated fatigue and thermal cracking as well as permanent deformation resistance of several rubberized asphalt mixtures in comparison with conventional mixes. The rubberized mixes consisted of PlusRide and asphalt-rubber mixes, in addition to a trial mix consisting of a combination of the wet and dry processes. Alaska DOT and Public Facilities designated pavement sections were sampled to conduct flexural beam fatigue tests, thermal stress restrained specimen tests and Georgia loaded-wheel tests on both rubberized and conventional mixes. Test results showed the superiority of the rubberized mixes in terms of fatigue and thermal cracking. The conventional mixtures outperformed the rubberized mixes in resisting permanent deformation.