Case Study
State Route 57, Wrightsville, Ga
ASPHALT PLUS CASE STUDY: STATE ROUTE 57, WRIGHTSVILLE, GA GA Route 57 is a heavily traveled highway in central GA. The roadway is located in a subtropical climate where stripping and rutting are significant issues for asphalt road construction. The region is exposed to extended periods of higher temperatures, humidity and rainfall. GA ROUTE 57 NEAR WRIGHTSVILLE, GA In 2008, GA DOT contracted for an experimental project on the use of elevated levels of RAP in rubberized asphalt. At that time, state DOT mix design RAP percentages had been limited to 20-25% due to over-stiffening of the mix. In this project, the DOT combined 40% RAP with 5% dry process rubber additions with the intention of determining whether the rubber additions would permit easier comp