Utilizing waste engine oil and Sasobit to improve the rheological and physiochemical properties of RAP

This study objective to assess the effects of Waste Engine Oil (WEO) and Sasobit on improving the rheological and physicochemical properties of Reclaimed Asphalt Pavement (RAP), both of which are considered waste materials. Seven asphalt mixes were prepared with varying percentages of these material...

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Bibliographic Details
Published in:Discover Civil Engineering 2024-11, Vol.1 (1), p.1-15
Main Authors: Afridi, Hassan Farooq, Khan, Diyar, Khan, Waseem Akhtar, Jamal, Hamza, Durrani, Afaq Ahmad, Afridi, Muhammad Ali, Milad, Abdalrhman
Format: Article
Language:English
Subjects:
Case Study
Civil Engineering
Engineering
FTIR test
RAP
Rejuvenation
Rheological test
Sasobit
WEO
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Summary:This study objective to assess the effects of Waste Engine Oil (WEO) and Sasobit on improving the rheological and physicochemical properties of Reclaimed Asphalt Pavement (RAP), both of which are considered waste materials. Seven asphalt mixes were prepared with varying percentages of these materials. The study included rheological testing, Fourier Transform Infrared Spectroscopy (FTIR) analysis, cost–benefit analysis, and final stage to select blend selection. Highway agencies typically limit RAP usage to 20% due to concerns such as fatigue and low-temperature cracking. To address these issues and increase the RAP content, rejuvenators are often required to soften the aged binder. This study investigated the use of WEO and Sasobit as rejuvenators, with WEO added at dosages of 4% and 8%, and Sasobit at 1%, 2%, and 3%. The penetration and viscosity methods were employed to determine the optimal amounts of WEO and Sasobit. The selected mixtures were tested for rutting resistance, fatigue performance, and low-temperature cracking susceptibility. FTIR was used to further analyze the blends, along with a cost analysis. The results indicated that 4% WEO was effective in rejuvenating 25% of the reclaimed binder, offering a cost-effective solution. While Sasobit did not function as a rejuvenator, it proved beneficial as a viscosity reducer.
ISSN:2948-1546
DOI:10.1007/s44290-024-00114-7