Warm Mix Asphalt Technologies: State of Knowledge and Best Practices

This guide presents the state-of-the-practice for warm mix asphalt (WMA) technologies in the United States. It includes an overview of the different WMA technologies and approval processes, an overview of the benefits of WMA, including engineering advantages and improvements in environmental factors and working conditions, and a description of best practices for the design, production, and construction of asphalt mixtures with WMA technologies.