Bitumen or binder is recognized as an essential coating material in the composition of bituminous pavements, apart from the aggregates skeleton for pavement construction. In asphalt pavement composition, the binder functions as an adhesive agent for the coating process and binds the aggregate particles together. Generally, the asphalt binder exhibits insufficient properties for pavement construction and needs to be modified with various alternative binders such as carbonaceous materials, fine minerals, polymers, waste materials, etc. An improvement of engineering properties for asphalt binder can be achieved with the application of a modifier by reducing temperature susceptibility and enhancing the rheological performance to withstand environmental and traffic loading. More studies need to be conducted worldwide to explore valuable resources from waste materials as a modifier for sustainable asphalt pavements.

Pavement distresses such as rutting and fatigue cracking is a major problem that usually occurs during the service life of asphalt pavement. The behavior of bitumen greatly depends on temperature and loading time. Conventional bitumen does not always meet requirements for future asphalt pavements due to inadequate properties to resist the distress. There are several types of solutions to overcome this problem. The introduction of modifiers into bitumen is one of the methods in order to improve the properties of conventional bitumen, increase the durability of the pavement, and prolong the pavement service life. Consequently, various alternative binders to improve the properties of the conventional bitumen need to be explored. Waste materials are potential candidates for alternative binders, including various agricultural, industrial, and municipal waste.

This Special Issue aims to collate original research and review articles that report on the newest studies on sustainable asphalt/binder in the fields of pavement technology and highway engineering. We aim to cover a variety of aspects including ultrafine particles in asphalt pavement, recycled waste materials, rheological properties, asphalt pavement design, the chemistry of alternative binder, and morphology characteristics of binder. Waste materials should conform to the goals of sustainability, low cost, high durability, environmental friendliness, and effective resource usage.

Potential topics include but are not limited to the following:

• Ultrafine particles in asphalt pavement
• Recycled waste materials in asphalt pavements
• Rheological properties of asphalt pavements
• Asphalt pavement design
• Chemistry of alternative binders
• Morphology characteristics of binders