Pozzotive, a ground glass pozzolan to be produced at new Connecticut plant, is one innovation that could qualify.

The crowds swelled through the gates of World of Concrete in Las Vegas, and equipment manufacturers were eager to sell through their stock as a strong construction market hits its stride.

With a climb seen in U.S. construction activity and a sense that equipment makers may finally have absorbed price hikes from decades of emissions-compliance upgrades, activity was brisk at the World of Concrete show, held in Las Vegas on Jan. 23-26.