Evaluation of Pavement Recycling and Rehabilitation Methods Based on the Analysis of Experimental Sections from the European PARAMIX Project

Abstract

The recycled material from milled aged asphalt pavements used to make new asphalt mixtures allows to reduce the use of new materials (aggregates and asphalt) as well as the quantity of asphalt residues left in the dumps. This represents huge advantages from the economic and ecological point of view, wich make pavement recycling to become a great alternative to be used more and more in the conservation and rehabilitation of pavements. 

This research try to increase the experience and knowledge about recycled mixtures performance, through an analysis of the pavements structural response on hot mixtures as well as cold ones on trial sections made in the european research project PARAMIX (Road pavement rehabilitation techniques using enhaced asphalt mix), sponsored by the European Union. The fundamental objective was to improved materials design and construction techniques for pavements rehabilitation using recycled mixtures. 

First of all, this research describes the rehabilitation actions and what types of mixtures were used in the different trial sections. In adition, deflections are analyzed before and after each rehabilitation, as well as the test laboratory results made with extracted samples, wich make possible to estimate the service period of the different pavement sections.