Considering the benefits of asphalt modification using a new technical LCA framework
2016 (English)In: Journal of Civil Engineering and Management, ISSN 1392-3730, E-ISSN 1822-3605, Vol. 22, no 5, 597-607 p.Article in journal (Refereed) Accepted
Asphalt mixtures properties can be enhanced by modifying it with additives. Even though the immediatebenefits of using polymers and waxes to modify the binder properties are rather well documented, the effects of suchmodification over the lifetime of a road are seldom considered. To investigate this, a newly developed open technical lifecycle assessment (LCA) framework was used to determine production energy and emission limits for the asphaltadditives. The LCA framework is coupled to a calibrated mechanics based computational framework that predicts the intimepavement performance. Limits for production energy of wax and polymers were determined for the hypotheticalcase studies to show how LCA tools can assist the additives manufacturers to modify their production procedures andhelp road authorities in setting ‘green’ limits to get a real benefit from the additives over the lifetime of a road. From thedetailed case-studies, it was concluded that better understanding of materials will lead to enhanced pavement design andcould help in the overall reduction of energy usage and emissions.
Place, publisher, year, edition, pages
Taylor & Francis, 2016. Vol. 22, no 5, 597-607 p.
life cycle assessment, asphalt binder additives, bitumen healing, calibrated mechanics based pavement design model, polymer, wax.
Environmental Sciences Infrastructure Engineering
Research subject Civil and Architectural Engineering; Materials Science and Engineering; Transport Science
IdentifiersURN: urn:nbn:se:kth:diva-102762DOI: 10.3846/13923730.2014.914084ScopusID: 2-s2.0-84940706774OAI: oai:DiVA.org:kth-102762DiVA: diva2:556397
QC 201604182012-09-252012-09-252016-06-27Bibliographically approved