Stabilization of cement-treated base mixes incorporating high reclaimed asphalt pavement materials using stabilizer rich in SiO2 and Al2O3

•Utilization of high reclaimed asphalt pavement materials instead of natural aggregate is a sustainable approach for CTB.•Old RAP material can be used upto 70% in CTB mixes.•Satisfactory performance in terms of strength and durability by RAP mixes.•Higher amount of RAP material decreases the UCS of CTB mix.