

The proper position of the roller train behind the paver aids compaction efforts. The paver needs to place the mix while the temperature is between 350˚F and 290˚F. To the right of the paver are two "breakdown rollers" working in tandem in a temperature range between 320˚F to 250˚F. The arrow indicates where "density tests" are best conducted (after the breakdown rollers) and the furthest right section shows where finish rolling is done (temperature range 150˚F to 100˚F.)
By Dale Starry
Dale Starry is marketing manager, industry and government associations, for Ingersoll Rand, Davidson, NC. He will present "Profitable 'Best Practices' for Successful Road Overlays" at National Pavement Expo, Jan. 31-Feb. 3, 2007 in Nashville. For information visit www.nationalpavementexpo.com.