Power Curbers Hosts Concrete Paving Improvement Event Posted on May 20, 2019 by Daniel Milam Power Curbers On Wednesday, May 15th, Power Curbers was excited to host the Federal Highway Administration (FHWA), North Carolina Department of Transportation (NCDOT), National Concrete Pavement Technology Center, and many others for an Open House discussing Performance Engineered Mixture (PEM) Test Methods. The FHWA brought their Mobile Concrete Technology Center (MCTC) to a nearby job site to demonstrate PEM test methods including Super Air Meter, Surface Resistivity, Box Test, and V-Kelly.