Title: DETERMINING THE EFFECTIVENESS OF PULVERIZING AND RELAY OF ASPHALTIC PAVEMENT AND BASE COURSE
Abstract: For this study, Pulverize and Relay (a technique in which the full flexible pavement section and a portion of the base course are pulverized, crushed, blended and compacted to form a base for new asphalt) was used to reconstruct three highway projects in the early to mid 1990s. For each project, a control section comprised of a standard asphaltic concrete (AC) overlay of an AC pavement was constructed in an effort to compare the effectiveness of the pulverize sections to the control sections. The overlays were constructed to the same thickness as the new pavement on the pulverize projects. Pavement performance data were collected and analyzed for all three projects in addition to the yearly maintenance costs. The pavement performance data included rutting, pavement distress index (PDI), international roughness index (IRI), and total linear feet of transverse and longitudinal cracking for each project. A life cycle cost analysis (LCCA) was performed for all three projects and shows that initially, the control sections are cheaper to construct, however, as time goes on and subsequent maintenance costs are incurred for sealing cracks, the pulverize sections become more cost-effective.
Publication Year: 2003
Publication Date: 2003-07-01
Language: en
Type: article
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