Importance of systems approach for evaluating the life cycle environmental impacts of a road project
(English)Manuscript (preprint) (Other academic)
Aggregates from two different sources and the effect of using a warm mix asphalt additive(WMAA) in asphalt mixtures were investigated in the laboratory. Different pavement designalternatives were generated using the laboratory data and analysed using a road life cycleassessment (LCA) framework. It was concluded that the effects of WMAAs must beevaluated on a case by case basis since WMAA interaction with the aggregate surfacemineralogy appears to play a significant role. Asphalt production and material transportationwere found to be the most energy consuming processes having high greenhouse gasemissions. The results presented also showed that having actual pavement material propertiesas the key attributes in LCA enables a pavement focused assessment of environmental costsassociated with different design options.
Life cycle assessment; warm mix chemical asphalt additive; different aggregate sources; pavement design; asphalt pavements.
Civil Engineering Environmental Engineering
Research subject Civil and Architectural Engineering; Transport Science
IdentifiersURN: urn:nbn:se:kth:diva-156015OAI: oai:DiVA.org:kth-156015DiVA: diva2:763860
QS 20152014-11-172014-11-172015-02-18Bibliographically approved