Cargando…

Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag

Policymakers are implementing the transition to a circular model in all economic sectors to drastically mitigate the effects of climate change. In this regard, the producers of paving products should promote the reuse and recycling of solid waste in the design of sustainable asphalt materials. This...

Descripción completa

Detalles Bibliográficos
Autores principales: Georgiou, Panos, Loizos, Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434263/
https://www.ncbi.nlm.nih.gov/pubmed/34501028
http://dx.doi.org/10.3390/ma14174938
_version_ 1783751556714201088
author Georgiou, Panos
Loizos, Andreas
author_facet Georgiou, Panos
Loizos, Andreas
author_sort Georgiou, Panos
collection PubMed
description Policymakers are implementing the transition to a circular model in all economic sectors to drastically mitigate the effects of climate change. In this regard, the producers of paving products should promote the reuse and recycling of solid waste in the design of sustainable asphalt materials. This study evaluated the performance-based properties of three highly recycled mixtures for wearing courses of asphalt pavements containing steel slag and varying amounts (25, 40, and 50%) of fractionated reclaimed asphalt (RA). In addition, the mixtures incorporated a warm mix asphalt (WMA) organic additive to lower production temperatures compared to a reference hot mix asphalt (HMA). Based on the experimental results, the warm recycled asphalt mixtures show equivalent or better performance compared to HMA in terms of moisture susceptibility, stiffness, rutting and fracture resistance, and surface macrotexture. Therefore, the combined incorporation of RA and steel slag with WMA was proven to be an effective option in designing environmentally friendly and high-performance wearing course mixtures.
format Online
Article
Text
id pubmed-8434263
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-84342632021-09-12 Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag Georgiou, Panos Loizos, Andreas Materials (Basel) Article Policymakers are implementing the transition to a circular model in all economic sectors to drastically mitigate the effects of climate change. In this regard, the producers of paving products should promote the reuse and recycling of solid waste in the design of sustainable asphalt materials. This study evaluated the performance-based properties of three highly recycled mixtures for wearing courses of asphalt pavements containing steel slag and varying amounts (25, 40, and 50%) of fractionated reclaimed asphalt (RA). In addition, the mixtures incorporated a warm mix asphalt (WMA) organic additive to lower production temperatures compared to a reference hot mix asphalt (HMA). Based on the experimental results, the warm recycled asphalt mixtures show equivalent or better performance compared to HMA in terms of moisture susceptibility, stiffness, rutting and fracture resistance, and surface macrotexture. Therefore, the combined incorporation of RA and steel slag with WMA was proven to be an effective option in designing environmentally friendly and high-performance wearing course mixtures. MDPI 2021-08-30 /pmc/articles/PMC8434263/ /pubmed/34501028 http://dx.doi.org/10.3390/ma14174938 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Georgiou, Panos
Loizos, Andreas
Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag
title Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag
title_full Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag
title_fullStr Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag
title_full_unstemmed Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag
title_short Characterization of Sustainable Asphalt Mixtures Containing High Reclaimed Asphalt and Steel Slag
title_sort characterization of sustainable asphalt mixtures containing high reclaimed asphalt and steel slag
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8434263/
https://www.ncbi.nlm.nih.gov/pubmed/34501028
http://dx.doi.org/10.3390/ma14174938
work_keys_str_mv AT georgioupanos characterizationofsustainableasphaltmixturescontaininghighreclaimedasphaltandsteelslag
AT loizosandreas characterizationofsustainableasphaltmixturescontaininghighreclaimedasphaltandsteelslag