Keith W Anderson, Jeff S Uhlmeyer, Tim Sexton, Mark Russell, Jim Weston
concrete pavement, diamond grinding, Next Generation Concrete Surface, on board sound intensity measurements, quieter pavements
This report documents the performance of the first Next Generation Concrete Surface (NGCS) built by the Washington State Department of Transportation (WSDOT). On-board sound intensity (OBSI) measurements increased from initial levels of 100.6 dBA to 104.4 dBA in 30 months. The increase in noise level was attributed to the loss of aggregate and general roughening of the concrete surface by studded tires.