Life-Cycle Cost Analysis of Alternative Reinforcement Materials for Bridge Superstructures Considering Cost and Maintenance Uncertainties
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 4
Abstract
A life-cycle cost analysis (LCCA) was conducted on prestressed concrete bridge superstructures using carbon fiber reinforced polymer (CFRP) bars and strands. Traditional reinforcement materials of uncoated steel with cathodic protection and epoxy-coated steel were also considered for comparison. A series of deterministic LCCAs were first conducted to identify a range of expected cost outcomes for different bridge spans and traffic volumes. Then, a probabilistic LCCA was conducted on selected structures that included activity timing and cost random variables. It was found that although more expensive initially, the use of CFRP reinforcement has the potential to achieve significant reductions in life-cycle cost, having a 95% probability to be the least expensive alternative beginning at year 23–77 after initial construction, depending on the bridge case considered. In terms of life-cycle cost, the most effective use of CFRP reinforcement was found to be for an AASHTO beam bridge in a high traffic volume area.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 24 • Issue 4 • April 2012
Pages: 373 - 380
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Nov 1, 2010
Accepted: Sep 25, 2011
Published online: Mar 15, 2012
Published in print: Apr 1, 2012
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