Accelerated pavement testing of untreated RAP layer in flexible pavements

Document Type

Conference Proceeding

Publication Date

1-1-2005

Abstract

Two flexible pavement test lanes, one with conventional crushed stone base and the other with untreated recycled asphalt pavement (RAP) base, were tested under the Accelerated Loading Facility (ALF). The primary objective of this study was to determine the effectiveness of untreated RAP material as a base course compared to the crushed stone material under accelerated loading. The secondary objective was to predict the accelerated pavement rutting using VESYS computer program. Field rut depths were continuously monitored and collected. A suite of laboratory material characterization tests was performed to determine the material permanent deformation properties used in the rutting prediction model. ALF test results indicated that the test lane containing untreated RAP base had similar pavement performance such as rutting to the control test lane (with stone base), implying that untreated RAP can be effectively used as a base material. A good agreement was observed between the predicted ruts from the VESYS program and the field measured ones.

Publication Source (Journal or Book title)

4th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2005

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