Synthesis, characterisation and mechanical impact of novel capsules using porous aggregates containing asphalt rejuvenator as an effective way to restore aged binder properties

Abstract

Synthesis, characterisation and mechanical impact of novel capsules using porous aggregates containing asphalt rejuvenator as an effective way to restore aged binder properties. International

Ageing Effects on a Softened Bitumen by the Addition of DSA (Dodecenyl Succinic Anhydride)

“…Among others, the main factor behind this worsening is the hardening of the binder within its entire in-service temperature range as a consequence of its ageing. Even though this outcome eventually becomes clearly beneficial at high temperatures (the increase in stiffness contributes to reduce the permanent deformation of the resulting pavement), it is generally accompanied by poor performance in the low thermal range due to embrittlement of the asphaltic mixture, making the pavement more prone to undergo thermal cracking failures [1][2][3][4][5][6][7].…”

“…Nevertheless, in order for these technologies to success, the deteriorated properties of reclaimed binders, arising from ageing processes, must be restored, which can be achieved by means of the so-called rejuvenators. Rejuvenating products are aimed at restoring the physical and chemical properties of the aged binder, replenishing the volatile and dispersing oils, while also promoting adhesion [6][7][8][9][10], in order to reduce fatigue and low-temperature cracking problems [8].…”