Recommended CitationWilliams, R. C., G. R. Duncan, and T. D. White. Sources, Measurements, and Effects of Segregated Hot Mix Asphalt Pavement. Publication FHWA/IN/JHRP-96/16. Joint Highway Research Project, Indiana Department of Transportation and Purdue University, West Lafayette, Indiana, 1996. doi: 10.5703/1288284313316.
There are several factors that lead to segregation. Segregation can occur during stockpiling and handling of aggregate and during mixing, storage, transport and lay down of the asphalt mixture. Sometimes segregation may result from a single source or from a combination of sources. Nondestructive test methods have been examined to determine their effectiveness in detecting segregation. These methods include thermal imaging, air penneability, nuclear moisture (asphalt) and density, and permittivity. Based on the effective of these technologies in a laboratory environment, the standard moisture/density nuclear gauge technology was field tested with a high degree of success. Use of four minute gauge readings is recommended.
hot mix asphalt, segregation, laboratory accelerated wheel track testing, nuclear gauge, HPR-2066
Joint Highway Research Project
West Lafayette, IN
Date of this Version