Life-Cycle Carbon, Energy, And Cost Analysis Of Utilizing Municipal Solid Waste Bottom Ash And Recycled Asphalt Shingle In Hot-Mix Asphalt

Abstract

The demands for pollution-free and recyclable engineering materials have increased as energy cost and environmental concern have risen. Moving toward green materials and design are approaches for better environmental quality and sustainable civil infrastructures. Pavement construction is one of the largest consumers of raw materials. Beneficial utilization of recycled materials in the pavement can result in an extraordinary opportunity to save mining, natural resources, energy, and landfill spaces. This study evaluates the structural and environmental-economical benefit performance of hot mix asphalt (HMA) by substituting virgin materials with one or a combination of two recycled materials. The two used recycled materials are recycled asphalt shingle (RAS) and municipal solid waste incineration bottom ash (MSWI-BA). This research introduces a sustainable HMA that potentially reduces the necessity of virgin fine aggregate and asphalt binder to 20% and 19%, respectively. In terms of environmental and economic impacts, in comparison with the regular HMA, it generates 15.5% less greenhouse gas emission, and for a period of 20 years, the cost of construction and maintenance would be 46% less.

Publication Date

1-1-2017

Publication Title

Geotechnical Special Publication

Issue

GSP 276

Number of Pages

333-344

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1061/9780784480434.036

Socpus ID

85018774657 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85018774657

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