Field Investigation of Modified Asphalt Mix in Pakistan


Abdul Farhan,Nadeem Anwar Qureshi,Arshad Hussain,M. Bilal Khurshid,Hassan Farooq Afridi,



Crum Rubber,Reclaimed Asphalt Pavement (RAP),Indirect Tensile Fatigue Test (ITFT),Tensile Strength Ratio Test (TSR),Asphalt Concrete Wearing Course (ACWC),


Pavement distresses such as Rutting, fatigue, Potholes and moisture induced damage are common Pavement distress that causes the pavement failure at early design life of pavement which causes huge financial constrain to national exchequer. Since developed countries are adopting pavement preventive technique as compared to pavement reconstruction. This strategy of pavement prevention can be beneficial for developing countries to enhance serviceable life of Pavement, which can save huge amount of Cost. In this research four different Pavement section were selected based on the type of treatment applied on that specific section along Islamabad-Lahore motorway (M-2), Pakistan. The first pavement section was a blend of 15 percent Rap and 7 percent crumb rubber (Rap 15%, CR 7%), the second pavement section was a blend of asphalt with crumb rubber modified bitumen as binder (Rap 0%, CR 7%), the third Pavement section was a blend of 15 percent Rap with grade 60-70 bitumen as binder (Rap 15%, CR 0%), the fourth section was asphalt concrete wearing course with grade 60-70 bitumen as binder(Rap 0%, CR 0%). Cores were extracted from the selected four section which were further evaluated at laboratory for pavement distresses such as fatigue and damage induced to pavement due to moisture at lab. It was concluded that section one performance against fatigue was substantially better than other pavement sections while section one performance against moisture induced damages was lesser as compare to other section. Moreover, it was observed that resistance against moisture damage was considerable in section 3.


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Author(s): Abdul Farhan, Nadeem Anwar Qureshi, Arshad Hussain, M. Bilal Khurshid, Hassan Farooq Afridi View Download