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Environmental Impacts of Replacing Natural
Name: Environmental Impacts of Replacing Natural
File: yazdanbakhsh presentation05-13-15 5B.pdf
Size(MB): 0.95MB
Extension: PDF
Event: 2015 ICSC - MIAMI
Speaker Name: Yazdanbakhsh, A.
Managed by: sdickens
Date Uploaded: June 1, 2015; 8:41 am
Download Count: 545
Downloads This Month: 545

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Country: United States
State/Region: Texas
City: Houston
Zip Code: 77072
Area Code: 281
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The use of coarse recycled aggregates (RAs) obtained from crushing and grading construction and demolition waste (CDW) in concrete has been widely studied and commercialized in several countries. In the US, over 300 million tons of construction and demolition waste is produced yearly, only a smaller portion of which is recycled and mainly used as road-base, fill and drainage materials. Only a small portion of U.S. RA is used in structural concrete pavements. To make a compelling case for the use of these recycled materials in concrete, in addition to mechanical performance and durability of RA concrete, the environmental impacts of replacing coarse natural aggregates (NAs) with RA need to be investigated. These impacts are highly dependent on local conditions, local recycled material sources, aggregate production methods, transportation distances, and concrete mix proportions. The presented study focuses on the local conditions of New York City metropolitan area and utilizes Life Cycle Assessment (LCA) to compare the environmental impacts and energy costs of using either natural or recycled aggregates in structural concrete.

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