Microstructural Investigation of Reclaimed Asphalt Binder with Bio-Based Rejuvenators
Reclaimed asphalt pavement (RAP) has become an important source for road materials for energy consumption in asphalt pavement production. In this work, three different bio based rejuvenators were added to the RAP binder: a vegetable oil, a cashew nut shell oil and a tall oil. To better understand the microstructural morphology, atomic force microscopy (AFM) was used with quantitative nano-mechanical mapping (QNM) showing how the addition of rejuvenators decreased the elastic moduli of the RAP binder before and after aging procedure. Aim of this work is to enlighten the effect of rejuvenators at the morphology of RAP’s binder.
KeywordsReclaimed asphalt binder Rejuvenators Atomic force microscopy Elastic moduli
Authors would like to thank the Swiss federal office for the environment grant number UTF 489.19.14/IDM 2006.2423.487 for the financial support.
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