This report presents recommended methods and specifications to detect and measure segregation of hot-mix asphalt (HMA) using infrared thermography or ROSANv laser surface texture measurements. It will be of particular interest to materials and construction engineers in state highway agencies, as well as contractor personnel responsible for construction of HMA paving projects. Further, the report contains criteria for classifying the severity of segregation with these measurement techniques and for correlating segregation to rutting potential, loss of fatigue life, permeability, and several other performance-related HMA properties. (A) This report may be accessed by Internet users at http://gulliver.trb.org/publications/nchrp/nchrp_rpt_441.pdf
Abstract