Biobased Pavement: Lab Assessment of a Recycling Technique Without Petroleum Bitumen Addition in Irish Context
bookPart
In the present paper, a lab technical study is proposed aiming at defin ing 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 conven tional 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.
TNO Identifier
1019148
Source title
Transport Transitions: Advancing Sustainable and Inclusive Mobility. Proceedings of the 10th TRA Conference, 2024, Dublin, Ireland, Volume 5: Smart Resilient Infrastructure
Pages
392-400