Field and laboratory studies were conducted to determine the feasibility of detecting and
quantifying segregation in hot-mix asphalt pavements. The study involved extensive testing
at 19 field sites in Michigan. Areas of apparent segregation were classified as light, medium,
and heavy. At the selected sampling areas, 1-min nuclear density measurements were
made, cores were taken and incinerated, asphalt contents and air voids were determined,
and gradation tests were performed. Statistical comparisons were made by using t-tests to …

Segregation in asphalt concrete pavements is a construction related problem that has been
of concern for many years. However, no quantitative methods to assess segregation are
typically found in standard specifications. Field and laboratory studies were undertaken to
determine the feasibility of detecting and quantifying segregation in hot mix asphalt
pavements.