Mineral aggregates make up between 80% and 90% of the total volume or 94% to 95% of
the mass of hot mix asphalt (HMA). For this reason, it is important to maximize the quality of …

This report detailed the design and instrumentation of a structural experiment at the NCAT
test track. The objectives of this experiment include: 1. Validating mechanistic pavement …

ABSTRACT The Circular Texture Meter (CT Meter) is a laser based device for measuring the
mean profile depth (MPD) of a pavement at a static location. Both MPD measurements from …

This digest summarizes key findings from National Cooperative Highway Research Program
(NCHRP) Project 1-40A, an independent, comprehensive review of the" Mechanistic …

Fatigue performance is one of the most important properties that affect the service life of
asphalt mixture. Many fatigue test methods have been developed to evaluate the fatigue …

The objectives of this FHWA pooled fund research project included the measurement of
imaging based volumetric and morphological indices of coarse aggregates and their …

This paper presents the results from an evaluation of a new gradation-based framework
developed for identifying and assessing the coarse aggregate structure of dense-graded …

BACKGROUND The National Center for Asphalt Technology (NCAT) Pavement Test Track
was originally devoted to accelerated full-scale mixture performance testing. The first …

The degree of deterioration in the structural capacity of a pavement is an important indicator
of its performance. Conventional falling weight deflectometer, which assesses pavement …

In the recent years, there has been a push towards designing roadways which will sustain
50 years of trafficking without having any structural fatigue damage. These “perpetual …