01379121

Component

http://www.trb.org/Main/Blurbs/167500.aspx

http://www.trb.org/Publications/Blurbs/167500.aspx

International roughness index (IRI) in each wheelpath, the difference in IRI between each wheelpath, crack counts, and texture data were used to evaluate the pavement condition of federal aid roadways in three Alabama counties. Analyses of these measurements showed that the differences in IRI between the right and left wheelpaths can be used to indicate the need for load-carrying support improvements to provide longer performance. Pavements in good condition and with adequate support had IRI values of less than 175 in./mi, differences in IRI between wheelpaths of less than 30 in./mi, and fewer than five cracks per mile with enough deterioration to influence ride quality. Preservation treatments such as fog seals, rejuvenating seals, sand seals, and crack sealing would help maintain the current good condition of the roadways. Roadways with IRI values in the left wheelpath of less than 175 in./mi, but with significantly higher values in the right wheelpath (differences greater than 30 in./mi), were associated with visual observations of edge distresses, depressions, bumps, and patching. In these cases, there is inadequate support for the traffic loads. Any maintenance or rehabilitation efforts should include improving the base properties (e.g., full-depth reclamation) or drainage. Pavements with both high IRI values and high crack counts are in need of rehabilitation. Alternatively, if the funding is not available for reconstruction, thin surface treatments such as chip or cape seals, and chip over fabric, would at least minimize further deterioration.

01379113

MMC12-103

English

pp 3-12

2012-7

Transportation Research Circular

2012 AASHTO–TRB Maintenance Management Conference

Web

Figures; References; Tables

Condition surveys; Pavement cracking; Pavement maintenance; Rehabilitation; Ride quality; Texture

International Roughness Index

Pavement preservation

Alabama

Highways; Maintenance and Preservation; Pavements; I61: Equipment and Maintenance Methods

TRIS, TRB

Jul 30 2012 7:31AM

• Best Practices in Highway Maintenance Performance Measuring
• Bridge Element Deterioration and Life Expectancy in Florida and Virginia
• Effective Use of Structural Health Monitoring for Highway Bridge Maintenance
• Equipment Mechanic Training and Certification
• Improvements in Asphalt Rubber Chip Seal Application with Warm-Mix Technology
• Level of Service Ranking Using the Percent-Within-Limits Measure
• Optimization Model for Pavement Maintenance Planning and Resource Allocation
• Performance-Based Maintenance and Operations Management
• Use of Automatic Vehicle Location Systems, Geographic Information Systems, and Global Positioning Systems to Increase Efficiencies and Decrease Cost in Maintenance Management
• Wet-Night Visibility of Pavement Markings: Research and Test Methods