Abstract
This report summarizes in two volumes key information on three recommended simple performance tests for permanent deformation (rutting) of hot mix asphalt (HMA). In the final phase of the work described here, the candidate tests for permanent deformation were validated with field performance data and specifications for their use were developed. The report will be of particular interest to materials engineers in state highway agencies, as well as to materials suppliers and paving contractor personnel responsible for designing and producing HMA mixes. (Author/publisher) This report may be accessed by Internet users at http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_580.pdf