ABSTRACT
This paper presents a methodology to support growth and implementation of a new asphalt mix, such as high modulus asphalt concretes (HMAC) for cold regions. This requires laboratory studies (fatigue, E* and sensitivity) and elaboration of trial sections with several steps. Even though that different fatigue test methods were used in this project (tension-compression and 2 points bending), similar Wohler’s law parameters were obtained with referring to a discriminant failure criterion. Overall, the laboratory investigation shows good to excellent thermomechanical properties of HMAC tested as regards stiffness, fatigue, low temperature, and rutting resistances. Moreover, the ongoing sensitivity study shows that HMAC mixes make with bitumen and filler dosage fluctuations in accordance to regulation are not more sensitive than usual HMA.
