Using survival and atrophy to understand the effect of RAP on moisture-induced damage susceptibility of asphalt mixes

An investigation on the use of lean asphalt as an alternative base material in asphalt pavements by means of laboratory testing, life cycle assessment, and life cycle cost analysis

“…Then, it was decided to replace part of the original virgin materials with RAP (with a binder content of 5.2%) under the hypothesis that the coated RAP aggregate would improve moisture susceptibility. Researchers have reported that surface-free energy parameters like wettability, work of adhesion, and energy ratio improved with an increase in RAP content [22], ultimately leading to better resistance to moisture damage [23]. The same two total binder contents were tested: 3.5% and 3.8% by the total mass of the mixture.…”