Concrete specifications for high-durability concrete may soon take on a new look thanks to an air void analyzer (AVA) being demonstrated by the Federal Highway Administration (FHWA). The device, reminiscent of a lava light with a PC interface, was developed more than a decade ago by the European firm Dansk Beton Teknik (DBT). It gives much more data about air entrained in concrete than the standard pressure pot or roll-a-meter, which give only the total percentage of entrained air.