Open-graded asphalt pavements, like those used on I-5, SR 520, and I-405 have been consistently measured as the “quietest” pavements in other parts of the world. Unfortunately open-graded asphalt pavements perform poorly when they are exposed to vehicles using studded tires. However, recent research has shown that certain concrete pavement surface textures have the potential to reduce tire/pavement noise.
WSDOT is measuring noise at the tire and pavement interface on several types of concrete surface textures that are applied to “wet” concrete before it hardens.
- Transverse tining adds shallow grooves perpendicular to the direction of traffic and is typically the “loudest” type of pavement.
- Longitudinal tining adds shallow grooves parallel to the direction of traffic flow.
- Carpet drag texturing is produced by dragging Astroturf carpet over the wet concrete to create a striated texture parallel to the direction of traffic.
The noise results below are from two projects on I-5 between Pierce County Line and Federal Way. The chart below shows measured just after construction, nine months later, and eighteen months later for the Pierce Co. Line to Tukwila project. The existing concrete pavement on these two projects received dowel bar retrofit treatment followed by diamond grinding to remove studded tire wear. Additional diamond grinding data is found on the Pavement Grinding page.
The chart below shows the single noise measurement of the conventional diamond grinding and carpet drag texture made just after construction on the Federal Way to S. 317th Street project.
WSDOT used longitudinal tining on a concrete rehabilitation project on I-90 near Cle Elum in 2010. The right lane was completely replaced with new concrete and given a longitudinal tined texture. The chart below shows the noise measurements after construction and eighteen months after construction.
The passing lane was restored to a good riding surface with conventional diamond grinding. Noise level results for the conventional diamond grinding can be found on the Pavement Grinding page.