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Advances in Civil Engineering
Volume 2010, Article ID 565924, 10 pages
http://dx.doi.org/10.1155/2010/565924
Research Article

Investigating In Situ Properties of Recycled Asphalt Pavement with Foamed Asphalt as Base Stabilizer

Laboratory of Highway Engineering, Department of Transportation Planning and Engineering, National Technical University of Athens, 5 Iroon Polytechniou Street, Zografou, 15773 Athens, Greece

Received 9 December 2009; Revised 31 March 2010; Accepted 8 April 2010

Academic Editor: Soheil Nazarian

Copyright © 2010 Christina Plati et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The objective of the present study was to conduct a comprehensive field experiment for the in situ assessment of in-depth recycled asphalt pavement using foamed asphalt as a stabilization treatment for base works. For this purpose Nondestructive Testing (NDT) data collected using the Falling Weight Deflectometer (FWD) and Ground Penetrating Radar (GPR) along a foamed asphalt recycled pavement section was thoroughly analysed. Critical issues including the stabilized material curing and the contribution of the asphalt layers to the structural properties of the in-depth recycled pavement are discussed. In addition, recommendations concerning the improvement of the structural condition of the in-depth recycled pavement are developed based on this practical approach of investigation using NDT.