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In the present paper, a lab technical study is proposed aiming at defining the recycling potential of Irish pavement materials using only a bio-material as added binder. The bio-binder used here is mainly made of a kraft paper industry residue, tall oil pitch by-products. It has been designed to replace totally conventional petroleum bitumen. In order to assess the applicability of this alternative solution, objectives are to understand: i) the rejuvenating effect of the bio-binder on the old bitumen, ii) the ageing behaviour of this particular blend, iii) the mechanical behavior of mixes made of reclaim asphalt and the bio-binder. This study shows, at lab scale, a very good ageing resistance of the bio-binder blended with old bitumen and good performances of the corresponding mixes. Hence, it is possible to recycle pavement materials without adding petroleum bitumen. The bio-binder used here could be used in the context of Irish pavement construction expecting a materials durability at least as good as conventional materials and a reduced carbon footprint.

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Biobased Pavement: Lab Assessment of a Recycling Technique Without Petroleum Bitumen Addition in Irish Context

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Emmanuel Chailleux,
  • Stéphane Lavaud,
  • Flavien Geisler,
  • Simon Pouget,
  • Amir Tabakovic,
  • Dave Vanvliet,
  • Alan Lynch,
  • E. Winterlich,
  • Declan O’Pray

摘要

In the present paper, a lab technical study is proposed aiming at defining the recycling potential of Irish pavement materials using only a bio-material as added binder. The bio-binder used here is mainly made of a kraft paper industry residue, tall oil pitch by-products. It has been designed to replace totally conventional petroleum bitumen. In order to assess the applicability of this alternative solution, objectives are to understand: i) the rejuvenating effect of the bio-binder on the old bitumen, ii) the ageing behaviour of this particular blend, iii) the mechanical behavior of mixes made of reclaim asphalt and the bio-binder. This study shows, at lab scale, a very good ageing resistance of the bio-binder blended with old bitumen and good performances of the corresponding mixes. Hence, it is possible to recycle pavement materials without adding petroleum bitumen. The bio-binder used here could be used in the context of Irish pavement construction expecting a materials durability at least as good as conventional materials and a reduced carbon footprint.