TRB’s Transportation Research Record: Journal of the Transportation Research Board, No. 2127 includes 20 papers that explore variability in the modified Lottman test, the American Association of State Highway and Transportation Officials (AASHTO) T283; noise and friction of dense-graded asphalt, stone matrix asphalt, and porous friction course; bonding of hot-mix asphalt (HMA) and concrete surfaces; dynamic modulus test to evaluate moisture susceptibility of asphalt mixtures; fatigue models of HMA; the energy ratio concept as a predictor of top-down cracking; determining representative volume elements of asphalt concrete mixtures without damage; and low design temperatures of asphalt pavements in dry-freeze regions.

This issue of the TRR also examines application of the generalized J-integral to crack propagation modeling of asphalt concrete, finite element analysis of HMA cracking, use of small samples to predict fatigue lives of field cores, micromechanical modeling of HMA, low-temperature field performance and laboratory testing of 10 test sections, precision of AASHTO TP62-07, refinement of flow number as determined by asphalt mixture performance tester, long-lasting asphalt mixtures, fracture resistance of Illinois HMA overlay mixtures, effective temperature for analysis of permanent deformation and fatigue of asphalt mixtures, the E* test using HMA specimens with varying void contents, and artificial neural networks for estimating the dynamic modulus of asphalt concrete.