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A platform for research: civil engineering, architecture and urbanism
Analysis of Asphalt Mixes Incorporating High Concentrations of Post-Industrial Recycled Multi-Layer Plastics
https://orcid.org/https://orcid.org/0009-0008-6760-2539
https://orcid.org/https://orcid.org/0000-0003-0626-2864
https://orcid.org/https://orcid.org/0000-0002-9411-8696
https://orcid.org/https://orcid.org/0000-0003-0033-0803
https://orcid.org/https://orcid.org/0000-0002-5118-4255
Post-industrial multi-layer plastic packaging (MPP) products face numerous challenges to their successful recycling or reuse. However, increased use of recycled material streams within flexible pavements presents a feasible route towards greater sustainability and performance. This study evaluates materials extracted and recovered from high-concentration MPP-modified asphalt mixtures produced from a small-scale plant trial. The extracted materials were subjected to aggregate image analysis, as well as standard rheological testing, including high-temperature performance grading and MSCR. The results of the study indicate that the melted plastic produces large agglomerations evident in coarser fraction sizes and increases the average particle size of fine aggregates in MPP-modified materials, which may contribute to difficulties with workability and compaction. MPP-modified mixes also had significantly lower AC contents and MRD values than conventional control mixes. Stiffening of the asphalt binder was observed from DSR testing. The grading and MSCR results should be supplemented with future thermochemical testing to determine the concentrations of melted plastic within the asphalt cement and isolate the potential effects of aging during production at the plant.
Analysis of Asphalt Mixes Incorporating High Concentrations of Post-Industrial Recycled Multi-Layer Plastics
https://orcid.org/https://orcid.org/0009-0008-6760-2539
https://orcid.org/https://orcid.org/0000-0003-0626-2864
https://orcid.org/https://orcid.org/0000-0002-9411-8696
https://orcid.org/https://orcid.org/0000-0003-0033-0803
https://orcid.org/https://orcid.org/0000-0002-5118-4255
Post-industrial multi-layer plastic packaging (MPP) products face numerous challenges to their successful recycling or reuse. However, increased use of recycled material streams within flexible pavements presents a feasible route towards greater sustainability and performance. This study evaluates materials extracted and recovered from high-concentration MPP-modified asphalt mixtures produced from a small-scale plant trial. The extracted materials were subjected to aggregate image analysis, as well as standard rheological testing, including high-temperature performance grading and MSCR. The results of the study indicate that the melted plastic produces large agglomerations evident in coarser fraction sizes and increases the average particle size of fine aggregates in MPP-modified materials, which may contribute to difficulties with workability and compaction. MPP-modified mixes also had significantly lower AC contents and MRD values than conventional control mixes. Stiffening of the asphalt binder was observed from DSR testing. The grading and MSCR results should be supplemented with future thermochemical testing to determine the concentrations of melted plastic within the asphalt cement and isolate the potential effects of aging during production at the plant.
Analysis of Asphalt Mixes Incorporating High Concentrations of Post-Industrial Recycled Multi-Layer Plastics
https://orcid.org/https://orcid.org/0009-0008-6760-2539
https://orcid.org/https://orcid.org/0000-0003-0626-2864
https://orcid.org/https://orcid.org/0000-0002-9411-8696
https://orcid.org/https://orcid.org/0000-0003-0033-0803
https://orcid.org/https://orcid.org/0000-0002-5118-4255
Post-industrial multi-layer plastic packaging (MPP) products face numerous challenges to their successful recycling or reuse. However, increased use of recycled material streams within flexible pavements presents a feasible route towards greater sustainability and performance. This study evaluates materials extracted and recovered from high-concentration MPP-modified asphalt mixtures produced from a small-scale plant trial. The extracted materials were subjected to aggregate image analysis, as well as standard rheological testing, including high-temperature performance grading and MSCR. The results of the study indicate that the melted plastic produces large agglomerations evident in coarser fraction sizes and increases the average particle size of fine aggregates in MPP-modified materials, which may contribute to difficulties with workability and compaction. MPP-modified mixes also had significantly lower AC contents and MRD values than conventional control mixes. Stiffening of the asphalt binder was observed from DSR testing. The grading and MSCR results should be supplemented with future thermochemical testing to determine the concentrations of melted plastic within the asphalt cement and isolate the potential effects of aging during production at the plant.
Analysis of Asphalt Mixes Incorporating High Concentrations of Post-Industrial Recycled Multi-Layer Plastics
Carter, Alan (editor) / Vasconcelos, Kamilla (editor) / Dave, Eshan (editor) / Schneider, Adam C. (author) / Aurilio, Roberto M. (author) / Qabur, Ali (author) / Baaj, Hassan (author) / Tavassoti, Pejoohan (author)
International Symposium on Asphalt Pavement & Environment ; 2024 ; Montreal, QC, Canada
14th International Conference on Asphalt Pavements ISAP2024 Montreal ; Chapter: 61 ; 367-372
2024-12-24
6 pages
Article/Chapter (Book)
Electronic Resource
English
| Springer Verlag | 2024
The mechanical properties of recycled asphalt mixes
| British Library Online Contents | 1995
Structural evaluation of hot recycled asphalt mixes
| British Library Conference Proceedings | 1993
Volumetric and Mechanistic Characteristics of Asphalt Mixes Containing Recycled Asphalt Pavement
| British Library Conference Proceedings | 2012