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Title:Performance of Interstate Rubblization in Illinois
Author(s):Lippert, David L.; Thompson, Marshall R.; Wienrank, Charles J.
Hot-mix Asphalt Overlay
Pavement Performance
Serviceability Life
Illinois Condition Rating Survey
Abstract:In Illinois, hot-mix asphalt overlaid concrete pavements typically exhibit reflective cracking of joints and cracks from the pavement below, resulting in shortened life and maintenance issues. Over the years, various patching, fabric, and crack and seat techniques were attempted with few positive results. This led to more aggressive techniques to eliminate the slab action of the concrete pavement where the pavement would be broken or rubblized into pieces typically less than 12 inches. Since the first rubblizing project in 1990, policy, procedures, and specifications have evolved to the point that rubblization is the mainstream option in dealing with problematic concrete pavements. This report summarizes the performance of several interstate rubblizing projects in Illinois by analyzing available data in Illinois Department of Transportation’s pavement management system. Condition rating survey data allowed the serviceability of these projects to be evaluated by surface mix types and asphalt performance grades. Traffic in the form of 18,000 lb equivalent single axle loads was determined for the projects to evaluate fatigue and rutting as well as compare section performance to the design procedure. The research team reviewed plans, design procedures, and specifications to determine best practices and identify where improvements might be made. Data showed that the use of stone matrix asphalt surface mixtures and mixes using PGXX-28 asphalt binders provides improved performance. Overall, rubblizing has shown good to excellent performance. To provide additional life with improved performance, recommendations include adopting softer asphalt grades, increasing the use of stone matrix asphalt, and improving procedures for protecting culverts.
Issue Date:2021-07
Publisher:Illinois Center for Transportation/Illinois Department of Transportation
Citation Info:Lippert, David L., Marshall R. Thompson, and Charles J. Wienrank. 2021. Performance of Interstate Rubblization in Illinois. A report of the findings of ICT-R27-193-2. Illinois Center for Transportation Series No. 21-005. Research Report No. FHWA-ICT-21-005. Illinois Center for Transportation, Rantoul, IL.
Genre:Technical Report
Rights Information:No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.
Date Available in IDEALS:2021-07-01

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