2004 - USA - NCHRP Report 523: Optimal Timing of Pavement Preventive Maintenance Treatment Applications

This report describes a methodology for determining the optimal timing for the application of preventive maintenance treatments to flexible and rigid pavements. The methodology is also presented in the form of a macro-driven Microsoft® Excel Visual Basic Application—designated OPTime—available to users by accessing the NCHRP website (http://trb.org/news/blurb_detail.asp?id=4306). The methodology is based on the analysis of performance and cost data and applies to any of the treatments and application methods that are used by highway agencies.