influence of the performance of reclaimed asphalt pavement (rap) material on bituminous mix

influence of the performance of reclaimed asphalt pavement (rap) material on bituminous mix

the utilization of reclaimed asphalt pavement (rap) material to prepare a durable bituminous concrete (bc) mixture, used for flexible pavement surface courses is a challenging task in this investigation. rap material is one of the latest substitutes for virgin aggregate and virgin binder of the bituminous mix.

using rap material in  flexible  pavements  can  improve  the  engineering  properties  of  bituminous  mix  and  is  also  beneficial  for economic and environmental.  to execute such study, virgin aggregate (va) has been replaced by 0, 10, 20, 30, 40, 50, 60, 75, and 100% of rap material, respectively, in the cited mix with 2% ordinary portland cement (opc) as mineral filler.

to characterize the rap material, several laboratory tests  such as specific gravity test, water absorption test, shape test, impact test, los-angeles abrasion test and, advanced tests as x-rf, x-rd,  and  gpc  test,  etc.  have been employed.  however,  to  assess  the  durability  and  strength  of  rap enriched bc mix, marshall stability test, modified marshall immersion test, indirect tensile strength (its) test and, cantabro abrasion test has been conducted.

 marshall stability test, modified marshall immersion test, its test, and cantabro abrasion test is explored that 50% rap modified bituminous mix has the capability to best perform than the other studied mix in terms of durability and strength. because the molecular bonding of carbonyl compound between aged and virgin binder is suspected in the mix improvement factor that leads to the longer span life of the rap modified flexible pavement.