01005164

Component

https://doi.org/10.3141/1905-06

http://scholar.google.com...lter&publication_year=2005

Many agencies place hot-mix asphalt overlays on deteriorating jointed or cracked portland cement concrete pavements to improve the ride, protect the pavement structure, and reduce noise. Reflection cracking of the joints and preexisting cracks through the overlay is a persistent problem. In climates such as that in Wisconsin, the initial reflective cracks often appear within a year or two. The Wisconsin Department of Transportation and the City of Milwaukee tried a fine-aggregate, asphalt-rich, polymer-modified asphalt mix interlayer to absorb joint movements, delay reflective cracking, and protect the existing pavement. Four Wisconsin projects are discussed. In the first project, constructed in 1996, the interlayer showed no effect on delaying reflection cracking within the first 3 years. Later projects, however, included specifications for performance-related design tests for flexural beam fatigue and Hveem stability and were overlaid with improved mixtures to complement the flexible interlayer. The later projects showed an average 42% improvement in the time to the appearance of surface cracks compared with the control sections. Furthermore, cores taken from the projects showed that even when the overlay cracked, some of the interlayer samples did not, even under severe conditions, thus further protecting the underlying pavement structure. Other major factors contributing to the cracking delay included the type of concrete pavement, concrete patches, and climate.

01005160

English

pp 44-55

2005

Transportation Research Record: Journal of the Transportation Research Board

0309093775

Print

Figures (6) ; Photos (13) ; References (16) ; Tables (2)

Bituminous overlays; Climate; Concrete pavements; Core samples; Fatigue tests; Hot mix asphalt; Hveem test; Polymer asphalt; Reflection cracking; Specifications

Interlayers (Pavements)

Wisconsin

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

TRIS, TRB, ATRI

Oct 3 2005 1:17PM

• Accelerated Pavement Rehabilitation and Reconstruction with Long-Life Asphalt Concrete on High-Traffic Urban Highways
• Application of Reliability Concept in Concrete Pavement Rehabilitation Decision Making
• Asphalt Pavement Rehabilitation Treatment: Analysis of 20 Years of Performance
• Assessment of Pavement Layer Condition with Use of Multiload-Level Falling Weight Deflectometer Deflections
• Falling Weight Deflectometer Correlation
• Fast Nondestructive Field Test Method to Determine Stiffness of Subsurface Layer in Thin Surface Hot-Mix Asphalt Pavement
• 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
• Monitoring Pavement Changes in a Rehabilitation Project with Continuous Rolling Dynamic Deflectometer Profiles
• Seed Modulus Generation Algorithm for Backcalculation of Flexible Pavement Moduli
• Simple Model for Pavement Damage