Final report

Arizona. Dept. of Transportation

PDF

The objective of this research project was to determine whether warm mix asphalt (WMA) technologies can be

used by the Arizona Department of Transportation (ADOT) for the production of an asphalt rubber‐asphaltic

concrete friction course (AR‐ACFC) without detrimental effects on performance of the pavement. The study

consisted of a laboratory study and the monitoring of a field construction project. Three ADOT‐approved warm

mix additives (Evotherm, Sasobit, and Advera) were investigated. The study showed that when the additives

were used at the manufacturer’s suggested target dosage level there was no negative impact on the durability

or the moisture susceptibility of the AR‐ACFC as compared to the control (no additive) mix.  

The field study confirmed that the use of WMA technologies during AR‐ACFC construction is feasible with no

adverse effects on paving operations.

US Transportation Collection

SPR 000-1(171) 631