Short-term and long-term aging effect of the rejuvenation on RAP binder and mixes for sustainable pavement construction  

作　　者：Sujit Kumar Pradhan 

机构地区：[1]Department of Civil Engineering,Indira Gandhi Institute of Technology Sarang,Odisha,India

出　　处：《International Journal of Transportation Science and Technology》2023年第4期937-954,共18页交通科学与技术(英文)

摘　　要：This investigation analyzes the usefulness of Mahua oil(M-oil)in reclaimed asphalt pavement(RAP)binder which simulates the short-term and long-term aging behavior of asphalt.As the inclusion of a higher amount of the RAP in the bituminous mix is susceptible to fatigue and thermal cracking,the use of a rejuvenator is a suitable option that can reinstitute the properties of the virgin binder.Different percentages of M-oil such as 1%,2%,3%,4%,5%,and 6% added to the short-term and long-term aged binder.Blended rejuvenated binders were evaluated through various physical properties.It was noticed that the inclusion of a rejuvenator increases the penetration,ductility,and flash point and reduces the softening point,and viscosity.Rheological properties conclude that rejuvenating short-term and long-term aged binder is feasible and can be considered an effective way to recycle the RAP binder.Further,rejuvenated(5% and 6%M-oil by weight of aged binder which is the optimum dosage)mixes were prepared with RAP mixture for short-term and long-term aging conditions to study the mechanical properties,i.e.,moisture sensitivity and rutting.Finally,it was concluded that 5%M-oil successfully rejuvenated the RAP mixes in longterm aging conditions.

关 键 词：RAP Rejuvenator Mahua oil RUTTING T-TEST 

分 类 号：TG1[金属学及工艺—金属学]