To promote a circular economy and sustainable development, the possibility of using lignin-rich industrial byproduct as partial substitute for asphalt emulsions in road pavements is analysed. A half-warm mix reclaimed (HWMRA)-type AC 16 surf S, manufactured with 100% pavement, selected. Substitution percentages 0% (control mixture), 5%, 10%, 15%, 20% are employed. The microstructure blend emuls...