A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Multiple Recycling of Asphalt Pavement: A Finnish Case Study
https://orcid.org/https://orcid.org/0000-0001-7939-1072
https://orcid.org/https://orcid.org/0000-0002-3240-6158
https://orcid.org/https://orcid.org/0000-0001-9018-0719
https://orcid.org/https://orcid.org/0000-0002-3142-1532
The demand for a higher level of sustainability in the pavement industry is promoting a substantial increase in the use of Reclaimed Asphalt Pavement (RAP). However, the next generation of pavement will be exposed to further recycling cycles, posing the question of how this practice will affect the durability and long-term performance of the roads. In this study, the effect of the multiple recycling (up to three generations) of RAP on the performance properties and the moisture damage was experimentally investigated, building on previous Finnish research efforts and relying on laboratory experimentation. First, loose asphalt mixtures were aged in the oven to generate 1 time, 2 times, and 3 times aged RAP. Next, 50% of artificial aged RAP was used to prepare a set of mixtures under different recycled levels. The moisture susceptibility, the resistance to rutting at high temperatures, and abrasion due to studded tires were tested on the entire set of asphalt mixtures. With an increase in the recycling iteration, recycled, re-recycled, and tri-recycled asphalt mixtures showed better properties in moisture susceptibility, rutting resistance, and abrasion against studded tires compared to the neat asphalt mixtures. The present experimental study provides evidence of the possibility of investigating multiple recycling of RAP in the Nordic regions.
Multiple Recycling of Asphalt Pavement: A Finnish Case Study
https://orcid.org/https://orcid.org/0000-0001-7939-1072
https://orcid.org/https://orcid.org/0000-0002-3240-6158
https://orcid.org/https://orcid.org/0000-0001-9018-0719
https://orcid.org/https://orcid.org/0000-0002-3142-1532
The demand for a higher level of sustainability in the pavement industry is promoting a substantial increase in the use of Reclaimed Asphalt Pavement (RAP). However, the next generation of pavement will be exposed to further recycling cycles, posing the question of how this practice will affect the durability and long-term performance of the roads. In this study, the effect of the multiple recycling (up to three generations) of RAP on the performance properties and the moisture damage was experimentally investigated, building on previous Finnish research efforts and relying on laboratory experimentation. First, loose asphalt mixtures were aged in the oven to generate 1 time, 2 times, and 3 times aged RAP. Next, 50% of artificial aged RAP was used to prepare a set of mixtures under different recycled levels. The moisture susceptibility, the resistance to rutting at high temperatures, and abrasion due to studded tires were tested on the entire set of asphalt mixtures. With an increase in the recycling iteration, recycled, re-recycled, and tri-recycled asphalt mixtures showed better properties in moisture susceptibility, rutting resistance, and abrasion against studded tires compared to the neat asphalt mixtures. The present experimental study provides evidence of the possibility of investigating multiple recycling of RAP in the Nordic regions.
Multiple Recycling of Asphalt Pavement: A Finnish Case Study
https://orcid.org/https://orcid.org/0000-0001-7939-1072
https://orcid.org/https://orcid.org/0000-0002-3240-6158
https://orcid.org/https://orcid.org/0000-0001-9018-0719
https://orcid.org/https://orcid.org/0000-0002-3142-1532
The demand for a higher level of sustainability in the pavement industry is promoting a substantial increase in the use of Reclaimed Asphalt Pavement (RAP). However, the next generation of pavement will be exposed to further recycling cycles, posing the question of how this practice will affect the durability and long-term performance of the roads. In this study, the effect of the multiple recycling (up to three generations) of RAP on the performance properties and the moisture damage was experimentally investigated, building on previous Finnish research efforts and relying on laboratory experimentation. First, loose asphalt mixtures were aged in the oven to generate 1 time, 2 times, and 3 times aged RAP. Next, 50% of artificial aged RAP was used to prepare a set of mixtures under different recycled levels. The moisture susceptibility, the resistance to rutting at high temperatures, and abrasion due to studded tires were tested on the entire set of asphalt mixtures. With an increase in the recycling iteration, recycled, re-recycled, and tri-recycled asphalt mixtures showed better properties in moisture susceptibility, rutting resistance, and abrasion against studded tires compared to the neat asphalt mixtures. The present experimental study provides evidence of the possibility of investigating multiple recycling of RAP in the Nordic regions.
Multiple Recycling of Asphalt Pavement: A Finnish Case Study
Carter, Alan (editor) / Vasconcelos, Kamilla (editor) / Dave, Eshan (editor) / Sun, Yuxuan (author) / Cannone Falchetto, Augusto (author) / Wang, Di (author) / Zhang, Fan (author)
International Symposium on Asphalt Pavement & Environment ; 2024 ; Montreal, QC, Canada
14th International Conference on Asphalt Pavements ISAP2024 Montreal ; Chapter: 39 ; 233-237
2024-12-24
5 pages
Article/Chapter (Book)
Electronic Resource
English
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