Alternative Bituminous Binder for Sustainable Flexible Pavement: A Review

Abstract

Bituminous binders used for flexible pavement materials are primarily obtained from refinement of petroleum. Since petroleum is non-renewable resource, there is an urgent need to produce alternative binders from bio-renewable resources. Standard alternative binders include pyrolyzed materials, jatropha curcas oil, waste cooking oil, pine resin, etc. This article presents an overview on the application of various types of alternative binders as a modifier for virgin asphalt, rejuvenator for aging asphalt, and recycling agent for reclaimed asphalt pavement. This review discusses the effect of using alternative binders on the physical and rheological properties of asphalt 60/70 and shows that alternative binders’ in appropriate dosage can enhance the physical properties of virgin asphalt and restore the properties of the aged binders. It is also concluded that rutting resistance and fatigue performance are affected by an alternative binder. The possibility of using alternative bituminous binder from economics point of view is also discussed for consideration of its applications in the paving industry.

Future Directions for Applications of Bio-Oils in the Asphalt Industry: A Step to Sequester Carbon in Roadway Infrastructure

“…In addition, the main hurdles that limit the application of seed bio-oils are the relatively low bio-oil yields from plant seed and a production/collection process that is time-consuming and labor intensive. 209 Some researchers recommended using chemical solvents such as n-hexane to increase oil yields. However, using chemical solvents can significantly increase the cost of bio-oil production.…”

“…However, the moisture sensitivity of asphalt must be carefully evaluated before using the produced bio-oils, since the performance of asphalt can significantly be influenced by moisture. In addition, the main hurdles that limit the application of seed bio-oils are the relatively low bio-oil yields from plant seed and a production/collection process that is time-consuming and labor intensive . Some researchers recommended using chemical solvents such as n -hexane to increase oil yields.…”

Pengaruh Karakteristik Aspal Modifikasi Getah Pinus Terhadap Peluruhan Campuran Aspal Porus

“…Karena kesamaan tersebut, penggunaan bahan-bahan nabati pada aspal dapat menghasilkan campuran antara aspal dan agregat dengan kinerja yang memuaskan (Gong et al, 2016;Mazzoni et al, 2018). Minyak biji jarak, minyak biji nyamplung, minyak kedelai, minyak jelantah dan minyak nabati lainnya serta bio-oil yang diperoleh dari proses pirolisis biomassa banyak digunakan sebagai pemodifikasi aspal (Yuniarti et al, 2022). Keuntungan dari penggunaan bahan-bahan nabati sebagai pemodifikasi aspal adalah pemanfaatan sumber daya alam yang dapat diperbaharui dan pelestarian lingkungan sesuai dengan konsensus internasional tentang pembangunan berkelanjutan (sustainable development).…”