Date of Award

Spring 1-1-2018

Document Type

Thesis

Degree Name

Master of Science (MS)

First Advisor

Wil V. Srubar III

Second Advisor

Abbie B. Liel

Third Advisor

Yunping Xi

Abstract

This thesis presents a comprehensive life cycle assessment of all 1262 pre-approved Colorado Department of Transportation (CDOT) concrete mixture designs and compares the results with the published National Ready Mix Concrete Association (NRMCA) sustainability national and regional benchmarks. This thesis provides a cradle-to-gate comparative life cycle assessment (LCA), which accounts for impacts occurring during raw material supply, transportation, and manufacturing of the concrete mixtures. The environmental impacts compared in this LCA are global warming potential, ozone depletion potential, acidification potential, eutrophication potential, smog potential, total primary energy consumption, and non-renewable energy consumption. In addition, a life cycle cost analysis is performed on all 1262 CDOT mixture designs to estimate the economic cost associated with each mixture. Trade-offs between cost and environmental impacts are also presented, analyzed, and discussed herein.

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