Durability analysis of different warm mix asphalt containing reclaimed asphalt pavement
PEREZ MARTINEZ ; MARSAC ; GABET ; HAMMOUM ; LOPES ; POUGET
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
PEREZ MARTINEZ ; MARSAC ; GABET ; HAMMOUM ; LOPES ; POUGET
Résumé / Abstract
Road mix asphalt manufacture process is associated with high consumption of raw materials, energy and high levels of emissions. The combined use of reclaimed asphalt and temperature reduction technologies may favour a cleaner and more sustainable production of asphalt mixtures. The aim of the present work is to study and compare two types of warm mix asphalts under two different technologies, surfactants and foamed asphalt, when adding high rates (50%) of reclaimed asphalt pavement into the mixtures. The study is based on the comparison of the mechanical performance of twelve mixtures through the fatigue and complex modulus tests. An aging procedure, based on the oxidation of materials in laboratory before testing, is developed. The aging protocol follows the lines proposed by the RILEM TC-ATB TG5 consisting in two separate aging phases. Penetration and ring and ball tests, as well as FTIR spectra were applied to know more about the evolution of aging from the bitumen extracted. Results show a relation between ageing evolution and mechanical performance. The ageing experienced by warm mix asphalt techniques is lower than conventional mixtures; however on fatigue life the performances are slightly different between them
