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.
Balancing Asphalt Performance and Sustainability with Warm Mix Additives
Paving industry professionals are increasingly struggling to address two critical priorities: enhancing roadway performance and meeting sustainability goals. With governments, contractors, and material producers under increasing pressure to reduce greenhouse gas emissions, technologies that support energy efficiency and a lower carbon footprint are increasingly in demand. Warm Mix Asphalt (WMA) and warm mix additives have risen in [...]
