EAPA Position Paper “Warm Mix Asphalt” available
The EAPA Position Paper “The use of Warm Mix Asphalt” is available on the EAPA website.
The position paper outlines technologies for producing Warm Mix Asphalt (WMA) at temperatures between 100 and 140°C, while still maintaining the properties and performance of Hot Mix Asphalt (HMA), which is produced at higher temperatures of 140 to 180°C. A typical WMA is applied at around 20-40°C lower than an equivalent HMA.
The position paper highlights the multiple environmental, manufacturing and operational benefits of WMA when compared to HMA.
• Environmental Benefits
Because of the lower production temperature of WMA, less energy is needed to heat the aggregate, which results in lower emissions and less fuel being used.
• Manufacturing and Paving Benefits
Lower asphalt temperatures result in less hardening of the bitumen/binder during manufacture. Furthermore, the WMA process will lower the amount of dust extraction because the aggregate is heated to a lower temperature.
• Paving Operations Benefits
The use of WMA improves the handling characteristics of asphalt, minimises fumes and odours for the asphalt workers and the public near work sites and creates a cooler, more comfortable working environment.
Warm Mix Asphalt is a greener, more sustainable alternative to Hot Mix Asphalt and demonstrates the European Asphalt Industry’s keenness to contribute to global carbon reduction and achieve the objectives of the Kyoto Protocol.