LABORATORY STUDY ON THE PERFORMANCE OF AC28 - BINDER COURSE WITH INCREASING RAP CONTENT UP TO 50% AND RECOMMENDED REJUVENATOR DOSAGE
DOI:
https://doi.org/10.11113/mjce.v38.25983Keywords:
ACBC28, hot-in plant recycling, RAP, RejuvenatorAbstract
The pavement industry in Malaysia has embraced the use of environmentally friendly technologies and sustainable practices, one of which is the use of reclaimed asphalt pavement (RAP) in asphalt pavement. To support this initiative, a study was conducted to assess the performance of a Hot Asphalt Mix (HMA) of Asphaltic Concrete Binder Course (AC28 - Binder Course) with varying percentages of RAP content consisting of 0%RAP, 30%RAP and 50%RAP. Exploring higher RAP content in asphalt mixes will contribute to achieving environmental sustainability in road construction and maintenance practices. The performance of the asphalt mixtures in this study was assessed using a series of laboratory evaluations, including the Indirect Tensile Strength, Resilient Modulus, Dynamic Creep, Wheel Tracking, and Indirect Tensile Fatigue tests. Additional bitumen tests were conducted to verify the influence of rejuvenators on high-RAP binders and to establish the required dosage according to the condition of locally sourced RAP.
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