INFLUENCE OF THE COMPOSITION OF REJUVENATOR ON PROPERTIES OF REPEATEDLY RECYCLED ASPHALT

In Japan, the recycling of asphalt mixture has a long history and it seems that recycling asphalt mixture regenerated several times already is also used. The usage rate of the recycled asphalt mixture is increasing year by year and it is necessary to establish a recycling method that is adapted to recycling repeatedly for sustainable recycling. For the purpose of establishing sustainable asphalt recycling technology, repeated recycling was carried out using several types of rejuvenator having different SARA (Saturate, Aromatic, Resin, Asphaltene) fraction, and the properties of the recycled asphalt and the recycled asphalt mixture were tested. As a result, the following was clarified. The softening point tended to rise due to repeated recycling. Recycled asphalt mixtures using recycled asphalt having a high softening point tended to occur cracking easily at high temperature. Rejuvenators containing a high aromatic tended to suppress an increase in softening point.

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  • English
  • Japanese

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Filing Info

  • Accession Number: 01728400
  • Record Type: Publication
  • Source Agency: Japan Science and Technology Agency (JST)
  • Files: TRIS, JSTAGE
  • Created Date: Jan 28 2020 9:44AM