Asphalt pavements with high reclaimed asphalt pavement content: Economic and environmental perspectives

Qazi Aurangzeb, Imad L. Al-Qadi

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Today's sustainability-driven systems require a product or process to be environmentally beneficial as well as cost-effective. This study used life-cycle cost analysis (LCCA) and life-cycle assessment (LCA) to consider the economic and environmental feasibility of using a high content of reclaimed asphalt pavement (RAP) in asphalt mixtures. The LCCA conducted in the study incorporated agency cost as well as the costs incurred by the user in the construction work zone. Initial construction as well as future maintenance and rehabilitation activities were considered in the analysis. The hybrid LCA look into account the material, construction, and maintenance and rehabilitation phases of the pavement life cycle. The results showed savings in terms of costs and energy use and reduction in greenhouse gas emissions with an increase in RAP content. On the basis of the LCCA and LCA performed under various performance scenarios, break-even performance levels were identified for mixtures with up to 50% RAP content. Break-even performance levels underscored the importance of achieving field performance for recycled mixtures equivalent to that for control virgin mixtures.

Original languageEnglish (US)
Title of host publicationTransportation Research Record
PublisherNational Research Council
Pages161-169
Number of pages9
ISBN (Electronic)9780309295451
DOIs
StatePublished - 2014

Publication series

NameTransportation Research Record
Volume2456
ISSN (Print)0361-1981

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering

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