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Environmental characterisation of reclaimed asphalt
Swedish Geotechnical Institute.
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2012 (English)In: WASCON 2012 - Towards Effective, Durable and Sustainable Production and Use of Alternative Materials in Construction: Proceedings of the 8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction, Gothenburg, Sweden, 30 May - June 1, 2012 / [ed] Arm, M, Vandecasteele, C, Heynen, J, Suer, P, Lind, B, Linköping: ISCOWA , 2012, p. 1-10Conference paper, Published paper (Refereed)
Abstract [en]

From a European perspective, the share of recycling of reclaimed asphalt (RA) that is reused in new asphalt surface courses is rather lower than what can be technically achieved. The use of RA in pavement construction can conserve natural resources and reduce environmental impacts (e.g. CO2 emissions, depletion of natural resources etc). However, for RA to be used to its full potential it must first be fully characterised. This would include an environmental assessment to determine whether or not the RA contains any contaminants associated with its previous use as a pavement material. Without this information the handling and reuse of RA could cause adverse environmental and health effects due to new or higher emissions of potentially hazardous substances. To increase the reuse of RA, and to ensure safe handling during the whole life cycle, it is thus important to correctly characterise these materials and to quantify potential emissions that arise at different stages (e.g. during production, processing and handling etc.). This study outlines a methodology for the environmental characterisation of RA, allowing the identification of potentially hazardous compounds in RA. This includes: (1) GC-MS screening to identify potentially hazardous organic compounds susceptible to leaching from RA; (2) Identification and evaluation of leaching tests (both with respect to characterization and compliance testing); (3) Ecotoxicological testing of leachates, using a biotest battery (freshwater algae, terrestrial plant, water arthropod and fish) that represent different trophic levels. The study is part of the European FP7 project Re-Road - end of life strategies of asphalt pavements.

Place, publisher, year, edition, pages
Linköping: ISCOWA , 2012. p. 1-10
Keywords [en]
Asphalt, Use, Reuse, Pavement, Leaching, Leachate, Environment, Ecotoxicology, Laboratory test, Conference, Göteborg, 2012, English
National Category
Earth and Related Environmental Sciences Geotechnical Engineering
Identifiers
URN: urn:nbn:se:swedgeo:diva-874Local ID: 000076330OAI: oai:DiVA.org:swedgeo-874DiVA, id: diva2:1365863
Conference
8th International Conference on Sustainable Management of Waste and Recycled Materials in Construction, Gothenburg, Sweden, 30 May - June 1, 2012
Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-10-25

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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  • asciidoc
  • rtf