01372798

Component

National Cooperative Highway Research Program (NCHRP) Synthesis 411 found that the most important factor for good long-term performance of microsurfacing used in a typical agency pavement preservation program was project selection. This paper expands on that information and furnishes a decision-making framework for selecting roads whose characteristics make them good candidates for microsurfacing. The tool is based on the output of a survey that included responses from 44 US state and 12 Canadian provincial highway agencies combined with the results of a comprehensive literature review. The paper concludes that microsurfacing is a pavement preservation tool with very few technical or operational limitations that is best suited to correct rutting, raveling, and loss of surface friction. It performs well if it is used to preserve structurally sound pavements. The survey found that it is considered a highly specialized treatment and as a result, most agencies do not understand those conditions in which microsurfacing can accrue significant pavement preservation benefits. Also, few US and Canadian agencies have a formal project selection process Therefore, the framework presented in the paper is both timely and needed. It will furnish agencies with the ability to identify those roads where microsurfacing is the appropriate treatment.

This paper was sponsored by TRB committee AHD18 Pavement Preservation

01362476

12-0246

English

12p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Literature reviews; Rutting; Stripping (Pavements); Surface friction (Geophysics)

Microsurfacing (Surface treating); Pavement preservation; Project selection

Highways; Maintenance and Preservation; Pavements; I60: Maintenance

Transportation Research Board Annual Meeting 2012 Paper #12-0246

TRIS, TRB

Feb 8 2012 4:53PM