Effect of Capsules Containing Sunflower Oil on the Mechanical Behavior of Aged Asphalt Mixture

R. Micaelo, T. Al-Mansoori, Alvaro Garcia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aim of this article is to investigate the rejuvenating effect of capsules containing sunflower oil in aged asphalt mixture. With this purpose, capsules have been built and their mechanical strength and composition characterised. The capsules were introduced in a regular asphalt mixture for base courses, which had been aged in the lab. Asphalt specimens with and without capsules were cyclic loaded in uniaxial compression and then allowed to rest for 24h before re-loading. The mechanical behaviour of the asphalt specimens with and without capsules is very similar in the first loading phase whilst after the rest period the specimens with capsules show to be more deformable. Cyclic compression broke the capsules, which released the oil in the asphalt mixture and changed the viscosity of bitumen. These results show that this type of capsules can be used for rejuvenating asphalt pavements.

Effect of capsules containing sunflower oil on the mechanical behaviour of aged asphalt mixture (PDF Download Available). Available from: https://www.researchgate.net/publication/307600937_Effect_of_capsules_containing_sunflower_oil_on_the_mechanical_behaviour_of_aged_asphalt_mixture [accessed May 23, 2017].
Original languageEnglish
Title of host publication2016 ISAP Symposium “From Molecules to Innovative Pavements”
Place of PublicationJackson, USA
Pages3-11
Publication statusPublished - 2016

Keywords

  • Self-healing materials
  • rejuvenators
  • capsules
  • mechanical testing

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