A byproduct of changes in bitumen quality is the trend for engineers to formulate asphalt mixes using a balanced mix design approach. This relatively new method accounts for variable bitumen specifications while prioritizing adherence to performance standards. Balanced mix design also allowed for incorporation of additives that can enhance the functional properties of a mix to improve performance outcomes. Rather than relying solely on binder or aggregate specifications to meet performance standards, all aspects of the mix (binder, aggregate, modifiers, and additives) are formulated to balance factors such as fatigue, rutting, and cracking characteristics.
What Are Sustainable Asphalt Pavements?
Sustainable asphalt pavements are becoming a defining standard for infrastructure planning and construction. Transportation networks are expanding under increasing traffic demand, climate pressure, and funding constraints, requiring agencies to rethink how roads are built and maintained. The result is a shift toward sustainable paving strategies that improve performance, reduce environmental impact, and extend service life. Roads should be functional and cost-effective while also aligned with long-term environmental, social, and economic goals. Sustainable [...]
