Permanent deformation of asphaltic concrete depends on temperature, rate of loading and state of stress and
significantly increases above 40 oC. The deformation behavior of finer to coarser hot-mix asphalt (HMA) mixtures
was investigated in the laboratory by varying stress level from 100 to 500 kPa at 40 oC & 55 oC. Uniaxial repeated
creep and wheel tracker tests were carried out at the specified conditions and the results were correlated to seek
relationships between test methods. Subsequently, shift factors and a correlation between the test methods are
proposed to guide pavement engineers in the selection of rut resistant mixtures in future. The results show that
intercept coefficients vary in a narrow range and an average shift of 0.48 makes both the tests data on a straight
line. Uniaxial repeated load strain test do not show a clear ranking of the mixtures at the specified temperatures and
the stress conditions. The slope of linear relationship between the tests reduces with an increase in temperature and
stress level.
