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Title:

Performance Evaluation of Microsurfacing in Utah and Analysis of Performance-Reduction Factors

Accession Number:

01372886

Record Type:

Component

Abstract:

The purpose of this research was to analyze the service life of microsurfacing in Utah and address the effects of specific factors on the service life of microsurfacing. The performance of several microsurfacing projects was assessed with a pavement condition index (PCI), rut depth measurements, and mean-texture depth measurements. The performance-reduction factors of traffic severity, climate severity, and pre-existing pavement condition were also collected for each project. Treatment performance was assessed where trends in the performance data with respect to time and these other factors were analyzed. Only PCI was effective at monitoring performance with time. The microsurfacing projects maintained a PCI rating of at least Fair/Satisfactory between 3 and 7 years. This wide range of performance is best explained by variations in the condition of the underlying pavement. Microsurfacing placed on pavements with a high degree of cracking returned to a Poor rating or worse after just 3 years, while treatments on good, non-cracked pavements are expected to perform well for as long as 8 years. The climate factor was not adequately addressed as insufficient projects from high- and low-severity climates were studied. When microsurfacing is used to mitigate existing distress problems, even if traffic severities are low, the treatment service life is severely reduced and the overall investment diminished. An alternative maintenance technique is strongly recommended if the existing pavement is in poor condition. Also, performance data from other climates could be used to better understand the effect of varied climate severity on microsurfacing service life.

Supplemental Notes:

This paper was sponsored by TRB committee AHD18 Pavement Preservation

Monograph Accession #:

01362476

Report/Paper Numbers:

12-3447

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Wilson, Bryan T
Guthrie, W Spencer

Pagination:

19p

Publication Date:

2012

Conference:

Transportation Research Board 91st Annual Meeting

Location: Washington DC, United States
Date: 2012-1-22 to 2012-1-26
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

Pavement Condition Index

Uncontrolled Terms:

Microsurfacing; Performance monitoring

Geographic Terms:

Utah

Subject Areas:

Highways; Maintenance and Preservation; Pavements; I60: Maintenance

Source Data:

Transportation Research Board Annual Meeting 2012 Paper #12-3447

Files:

TRIS, TRB

Created Date:

Feb 8 2012 5:16PM