Specification Criteria for Simple Performance Tests for Rutting. Volume 1: Dynamic Modulus (E*); Volume 2: Flow Number and Flow Time. National Cooperative Highway Research Program

摘要

This report summarizes in two volumes key information on three recommended simple performance tests for permanent deformation 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. A key objective of NCHRP Project 9-19, Superpave Support and Performance Models Management, was to develop simple performance tests for permanent deformation and fatigue cracking for incorporation in the Superpave volumetric mix design method. The 2002 NCHRP Report 465: Simple Performance Test for Superpave Mix Design summarized analytical and experimental work conducted between 1995 and 2001 at the University ofMaryland and Arizona State University to (1) survey the range of potential simple performance test methods and (2) select the most promising methods for a field validation program. The resulting field validation and specification development programs were conducted between 2001 and 2005. Both plant mixes and laboratory-blended, short-term oven-aged mixes were tested in the field validation program. Mixtures from Mn Road, NCAT TestTrack, Indiana, Nevada I-80, WesTrack, FHWA-ALF, and Arizona I-10 sites constituted the complete test matrix. The results of the validation program supported the selection of the dynamic modulus (E*), flow number (Fn), and flow time (Ft) tests as simple performance tests for permanent deformation of HMA mixes.