Premature rutting on asphalt pavements has been experienced throughout the nation, and wisconsin is no exception. The wisconsin department of transportation(wisdot) in the 1980s vigorously addressed the rutting problem, developed specifications, constructed several special pavements, and undertook a major researchproject to study four of these special pavements. The wisdot specifications forrut-resistant asphalt pavements require high-quality aggregates, high target density, controlled air voids, high fractured particles, high voids in the mineralaggregate, good quality control, and sufficient field compaction. Preliminary results on these special pavements indicate minimal rutting, some premature reflective cracking, but generally good overall performance. Those in wisdot are committed to construct quality rut-resistant asphalt concrete pavements and are confident that the current specification for heavily traveled roadways will solve the rutting problem. This paper appears in transportation research record no. 1259, Chip seals, friction courses, and asphalt pavement rutting 1990.
Abstract