Due to its efficiency, viscoelastic continuum damage mechanics has been used for modelling asphalt concrete behaviour widely. In this approach, viscoelastic and damage response are used to obtain a damage characteristic curve. Under ideal conditions, these damage characteristic curves obtained under different loading conditions should collapse to a unique curve. Due to inherent variations during specimen fabrication and testing, significant scatter are found in damage characteristic curves even under well-controlled laboratory conditions. Owing to deterministic nature, present day viscoelastic continuum damage models fail to account this scatter in damage characteristic curves. This paper presents a probabilistic approach to describe the scatter in damage characteristic curves. Several specimens were tested for their viscoelastic properties and damage response. These test results were used to construct …