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Life-Cycle Cost Model for Evaluating the Sustainability of Bridge Decks

CSS Publication Number
CSS05-23
Abstract

Concrete infrastructure systems require large capital investments and resource flows to construct and maintain. An integrated life cycle assessment and cost model was developed to evaluate infrastructure sustainability, and compare alternative materials and designs using environmental, economic and social indicators. The model is applied to two alternative concrete bridge deck designs: one a conventional steel reinforced concrete (SRC) deck with mechanical steel expansion joints, and the other an SRC deck with engineered cementitious composite (ECC) link slabs. Life cycle energy, greenhouse gas emissions, agency costs for construction and rehabilitation, and social costs including construction-related user delay costs and environmental pollutant damage costs are quantified for each system over a 60-year bridge service life. Results show that the ECC link slab system has a 37% cost advantage over the conventional system, consumes 40% less total primary energy, and produces 39% less carbon dioxide.

Research Areas
Urban Systems and Built Environment
Materials
Publication Type
Conference Proceeding
Digital Object Identifier
https://hdl.handle.net/2027.42/84802
Full Citation

Keoleian, Gregory A., Alyssa Kendall, Richard Chandler, Gloria E. Helfand, Michael Lepech, and Victor C. Li. 2005. Life-Cycle Cost Model for Evaluating the Sustainability of Bridge Decks. Proceedings of the International Workshop on Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems. Cocoa Beach, Florida (May 8-11, 2005): 143-150.