01005178

Component

https://doi.org/10.3141/1905-01

http://scholar.google.com...+Nam&publication_year=2005

The success of a rehabilitation project that involves replacement of the asphalt concrete (AC) overlay on a concrete pavement often depends on the assessment of the existing conditions and the repair of critically weak locations. In a case study, a rolling dynamic deflectometer (RDD) was used to collect continuous deflection profiles at different stages in such a project. The project, conducted by the Texas Department of Transportation, was located in the Atlanta District. The condition of the pavement was monitored with an RDD in each stage. The stages ranged from before milling of the original AC overlay to 22 months after the placement of a new overlay. The deflection profiles measured after milling were used to identify locations with a high potential for reflection cracking. After the new overlay was placed, profiling was repeated at three different times to (a) monitor changes at locations of previously high deflections, (b) evaluate the effectiveness of full-depth repairs, and (c) group different AC test sections of the new overlay according to the condition of the underlying concrete pavement. It was found that the continuous deflection profiles obtained at the start of a rehabilitation project can be used to identify high-deflection locations that, if not repaired, will likely deteriorate rapidly after the new overlay is placed. The continuous deflection profile measured on the concrete pavement after milling was particularly helpful in identifying high-deflection locations that were irregularly spaced. Continuous deflection profiles, measured at various times after placement of the new overlay, effectively tracked the zones of deterioration.

01005160

English

pp 3-16

2005

Transportation Research Record: Journal of the Transportation Research Board

0309093775

Print

Figures (10) ; Photos (8) ; References (5) ; Tables (1)

Asphalt concrete; Case studies; Concrete pavements; Deflection; Full-depth reclamation; Monitoring; Overlays (Pavements); Reflection cracking; Rehabilitation; Test sections

Rolling dynamic deflectometers

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces

TRIS, TRB, ATRI

Oct 3 2005 10:43AM

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• Full-Car Roughness Index as Summary Roughness Statistic
• History and Development of U.S. Procedures for Falling Weight Deflectometer Calibration
• Identifying Friction Variations with the Standard Smooth Tire for Network Pavement Inventory Friction Testing
• Implementation of Cold In-Place Recycling with Expanded Asphalt Technology in Canada
• Implementation of Reliability-Based Backcalculation Analysis
• Interpretation of Transverse Profiles to Determine the Source of Rutting Within an Asphalt Pavement System
• Methodology for Detection of Defect Locations in Pavement Profile
• Modeling Hydroplaning and Effects of Pavement Microtexture
• Seed Modulus Generation Algorithm for Backcalculation of Flexible Pavement Moduli
• Simple Model for Pavement Damage
• Wisconsin Experiences with Reflective Crack Relief Projects