CAL/APT Program – Construction of the Goal 3 Overlays and Recommendations for Improved Overlay Performance in California

John Harvey, Nicholas Coetzee and Leoni Louw

Institute of Transportation Studies, Working Paper Series from Institute of Transportation Studies, UC Davis

Abstract: This report describes the construction of the CAL/APT Goal 3 overlays and details observations regarding current Caltrans procedures which are intended to help improve the performance of Caltrans overlays. The main objective of Goal 3 is the comparison of the performance of a Gap Graded Asphalt Rubber Hot Mix (ARHM-GG) overlay with that of a conventional Dense Graded Asphalt Concrete (DGAC) overlay. Based on Caltrans design procedures, ARHM-GG overlay thicknesses are typically half of the equivalent DGAC overlay. These overlays represent typical pavement structures currently in use throughout California (1). The complete plan for HVS and laboratory testing and associated analyses is outlined in the Goal 3 test plan (9).

Keywords: Engineering (search for similar items in EconPapers)
Date: 1999-11-01
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Persistent link: https://EconPapers.repec.org/RePEc:cdl:itsdav:qt5sk52735

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