Repair of Studded Tire Damage I-5 Pilot Project M.P. 276-278 Northbound Section

摘要

In 1996, a pilot project to repair studded tire damage on CRC Pavement wasconstructed on Interstate 5 north of Salem, Oregon. The test section was about 5 km (3 mi.) long a three-lane section of highway. Rut depths on this section were about 20 mm (.80 in.) with most of the damage in the center lane. Since the average daily traffic volume (ADT) was greater than 45,000 the work was done at night. Four different thin AC overlays were placed on the test section. The first was a standard open graded F-mix. The second was the same F-mix with mineral fibers added. The third was a 38 mm (1.5 in.) stone mastic course aggregate mix. Finally, the last section was paved with 25 mm (1.0 in.) lift of a fine stone mastic lift. The work was completed near the end of the paving season and was delayed by a week due to rain. The night paving and the late season low temperatures caused some lay down problems. Lumping of the mix slowed the paving operation and produced a rough ride. Compaction was also low and inconsistent. The section will be monitored for distress for two years. Raveling and/or rutting will be checked periodically.