Verification of Job Mix Formula for Alaskan Hma Verification of Job Mix Formula for Alaskan Hma Performed in Cooperation with the Alaska Department of Transportation and Public Facilities Materials Section

Public reporting for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestion for reducing this burden No restrictions 12b. DISTRIBUTION CODE 13. ABSTRACT (Maximum 200 words) Some asphalt pavement does not last as long as it should. Every year, a significant amount of money is spent by the state on repairing and maintaining pavement, which raises the question: Are we getting the mix design we need? Since hot mix asphalt (HMA) is the main paving material in Alaska, it is critical to understand how the quality of this material is assured. Often, a properly lab-designed HMA is used in the field on a given project and performs in a substandard manner. Variability is inevitable during construction. Two projects were selected for the study. Pertinent data from ADOT&PF and from contractors at lab/design and construction were obtained, including general information regarding the paving projects, details of the materials and JMF being used in the construction, quality control testing data from contractors, and acceptance testing results from the agency.