"A concrete with mechanical properties equal to or better than conventional normalweight concrete, but weighing 20% less is a big deal," writes Ken Bondy, a consulting structural engineer and member of the ACI Standard Building Code Committee. In this piece, he explores the composition of the material and explains how using it can reduce costs and improve sustainability.
Source: AGC SmartBrief e-newsletter for April 4, which contained this story from Structure magazine.
National Ready Mixed Concrete Association