Analysis of creep behavior of asphalt core samples taken in different seasons using non-linear models

Abstract

In this study, a flexible pavement with a length of 120 meters and a width of 6 meters was constructed and this pavement consists of three different mix types. Core samples were taken at different months from this pavement that consisting of control mix, RAP added mix and RAP+NP added mixture. The core samples were subjected to dynamic creep test. The results obtained were analyzed with creep power law model and the behavioral differences were analyzed. Experimental results showed that the amount of permanent deformation decreased with the addition of NP. Moreover, these results were confirmed when the power law parameters were analyzed. The lowest R2 value in the power law model was found to be 0.95, confirming the high accuracy of the results.