Development of Performance-Based Specifications and Analysis of Life Cycle Impacts for Portland Cement Concrete Pavement and Structural Concrete
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Kopp, Tobias Manfred
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Abstract
This research considered the development of performance-based specifications (PBS) for concrete pavements and structures to facilitate the specification of more durable and sustainable concrete for the State of Georgia. A set of proposed PBS was developed for the Georgia Department of Transportation (GDOT) based on Standard Specification Sections 430, 439 and 500. Specifically, chloride ion penetration limits were developed for specific GDOT concrete classes and validated using surface resistivity measurements on qualified mixes. Additional performance testing metrics and limits were adapted to suit the geography and environmental conditions of the State of Georgia based on a set of proposed unified ACI specifications.
To assess the environmental and financial impacts from the proposed PBS, both a Life Cycle Analysis (LCA) and Life Cycle Cost Analysis (LCCA) were developed for several scenarios and service lives to compare the current specifications with the proposed PBS. The results of the LCA and LCCA indicated the proposed PBS could reduce the environmental and financial impact to the State of Georgia and based on the analysis, this research recommends adopting the proposed PBS.
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2023-07-31
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