Évaluation des propriétés mécaniques et physiques des matériaux bitumineux recyclés produits par retraitement en place
|Advisor:||Doré, Guy; Bilodeau, Jean-Pascal|
|Abstract:||In order to respond to an increasing demand for re-using bituminous materials, this study, carried out under the Research Chair i3C, has evaluated the effect of recycled asphalt pavement (RAP) on the mechanical behavior of a recycled base materials for five different RAP content (0 , 30, 50, 60 and 70% RAP). The main objectives of this project were to characterize the resilient and permanent deformation of these materials as well as assessing their variability on site and provide innovative solutions for the different issues. Laboratory tests were conducted on the five mixtures and field trials were carried out on three sites in the greater Quebec area. Some aspects were also tested in the road simulator apparatus of Laval University (SimUL). The data collected in the field with the light weight deflectometer (LWD) and the dynamic cone penetrometer (DCP) and also the triaxial cell has documented the characteristics and mechanical behavior of recycled base material. The project showed that materials with a higher RAP content are more likely to accumulate permanent deformation. Using base materials with more than 50% RAP can increase rutting problems. However, in order to overcome this prejudice, a model that relates the rate of deformation (B), the RAP content and the deviatoric stress is proposed. This new approach propose to evaluate the enhancement of the asphalt thickness needed to reduce the sensitivity to rutting of a recycled base layer.|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||19 April 2018|
|Collection:||Thèses et mémoires|
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