Asphalt is the most recycled material in the United States according to the National Asphalt Pavement Association (NAPA), amounting to nearly 97 million tons of reclaimed asphalt pavement (RAP). As a result, over 90% of new roadway surfaces in the U.S. are built using RAP. This trend is spreading globally as more contractors and transportation agencies explore the [...]
Demand for sustainable roadway solutions continues to grow as transportation agencies work to address both performance specifications and carbon emission standards. One technology rising in global popularity is the use of reclaimed asphalt pavement (RAP) along with an asphalt rejuvenator. Asphalt rejuvenation helps to restore the functional properties of the aged binder in RAP, enabling higher percentages of [...]
Warm mix asphalt (WMA) production remains an alterative to traditional hot mix asphalt (HMA) approaches as manufacturers explore options for reducing costs and emissions. For example, mixes developed using warm mix asphalt technologies represent 39.6% of all asphalt mix production in the United States. In the European Union, WMA market share has increased to an average of 18.3%, [...]
TRANSCRIPT: Asphalt mix design engineers are facing challenges in balancing requirements for roadway durability, sustainability, and cost. Using balanced mix design, or BMD, shifts the focus from volumetric properties to performance testing. This can help engineers optimize resistance to rutting, cracking, aging, and fatigue while also potentially reducing costs and leveraging eco-friendly solutions [...]