Exploring Alternative Strategies for the Rehabilitation of Low-Volume Roads in Nevada. Report for October 2001 to January 2008

摘要

Nevada has been among the fastest-growing states in the nation for over two decades. Due to this growth, the Nevada Department of Transportation (NDOT) is faced with the challenge of how to balance its available funding between pavement preservation and capacity improvement projects. This challenge is even greater for the low-volume roads network. Low-volume roads upkeep has been delegated to NDOT maintenance personnel and allocated funds have not been sufficient to address the distress modes on these roads. Thus, more cost-effective methods for pavement rehabilitation and maintenance must be determined and evaluated for inclusion in NDOT's pavement preservation program. A total of 29 combinations of pavement surface and structural rehabilitation strategies were constructed on 111 centerline miles of low-volume roads throughout Nevada. The strategies included full depth reclamation, cold mix asphalt concrete pavement, cold in-place recycling, and various surface treatments. The test sections were monitored with roughness surveys, conditions surveys, falling weight deflectometer testing, and core evaluations for resilient modulus, strength, and rutting susceptibility.