The American Concrete Institute (ACI) recently announced a new webinar on chemical admixtures for concrete, scheduled for April 4, 2017 at 1 p.m. (EDT). “An Overview of Chemical Admixtures for Concrete,” will be presented by Charles Nmai, Ph.D., manager of engineering services at BASF Corp. The webinar will provide an overview of chemical admixtures: what they are; their benefits and limitations; and how they are used, either singularly or synergistically, to improve concrete construction.