The economics of new-technology materials:

Ehlen, Mark Andrew; Marshall, Harold E.

doi:10.6028/nist.ir.5864

Cited by 23 publications

(11 citation statements)

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“…The term C t is the sum of all costs that occur in year t and T is the number of years in the study period (Ehlen and Marshall 1996). The discount rate d, for converting time t costs to time 0, was obtained from the Office of Management and Budget Circular no.…”

Section: Unit Cost Due To Mrandr Actions In Concrete Bridge Decksmentioning

confidence: 99%

MEMRRES: model for evaluating maintenance, repair and rehabilitation strategies in concrete bridge decks

Hong

Hastak

2005

Civil Engineering and Environmental Systems

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It is very important for State Departments of Transportation (DOT) to establish strategies with regard to maintenance, repair, and rehabilitation (MR&R) of bridges. With the availability of Bridge Management Systems (BMS) such as PONTIS and BRIDGIT, owners are beginning to emphasize cost-effective proactive strategies from the start, when the bridge is new. Therefore, a model is required for the development of optimal MR&R action scenarios suitable to each DOT for effective management of the bridges.This article introduces a Model for Evaluating Maintenance, Repair and REhabilitation Strategies (MEMRRES) in concrete bridge decks. The MEMRRES assists the decision makers in determining the optimal MR&R strategy among the feasible MR&R strategies. The MEMRRES methodology is explained through a hypothetical example and is applied for determining the optimal MR&R strategy of concrete bridge decks for 24 State DOT (DOTs). It can be used as a tool by bridge engineers within their respective DOT to select cost-effective MR&R actions for concrete bridge decks.

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Section: Unit Cost Due To Mrandr Actions In Concrete Bridge Decksmentioning

confidence: 99%

MEMRRES: model for evaluating maintenance, repair and rehabilitation strategies in concrete bridge decks

Hong

Hastak

2005

Civil Engineering and Environmental Systems

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“…The different unit or hourly user costs are found in Table 6. Reference values for C VOC and C delay can be found in Ehlen and Marshall (1996) and Wall and Smith (1998). Figure 7 illustrates the results of the life cycle cost analysis (LCCA) that was evaluated using the present value life cycle cost (PVLCC) approach.…”

Section: Multiobjective Decision-making For Design and Management Of mentioning

confidence: 99%

“…User costs include the travel delay costs, vehicle-operating costs and accident/crash costs (Hawk 2003, Golabi et al 1993, Ehlen and Marshall 1996. Users' costs increase with increasing traffic volume and increasing duration and disruption of the maintenance or rehabilitation activity.…”

Section: Minimization Of Bridge Users Costsmentioning

confidence: 99%

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Multi-objective and probabilistic decision-making approaches to sustainable design and management of highway bridge decks

Lounis¹,

Daigle²

2013

Structure and Infrastructure Engineering

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10. 1080/15732479.2012.657652 Structure and Infrastructure Engineering (Special Issue on Asset Management), pp. 1-20, 2012-02-01 Multi-objective and probabilistic decision-making approaches to sustainable design and management of highway bridge decks Lounis, Z.; Daigle, L.Multi-objective and probabilistic decision-making approaches to sustainable design and management of highway bridge decks Lounis, Z.; Daigle, L. NRCC-53995A version of this document is published in: The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. The aging an deterioration of highway bridges and the new requirements for sustainable infrastructures and communities require innovative approaches for their management that can achieve an adequate balance between social, economic and environmental sustainability. This paper presents a multi-objective decision-making approach for the sustainable design and management of highway bridge decks, which can considers several and conflicting objectives, such as the minimization of owner's costs, users costs, and environmental impacts and uses goal setting and compromise programming to determine the satisficing and compromise solutions that yield the best trade-off between all competing objectives. The proposed approach is based on robust reliability-based mechanistic models of the deterioration and service life of reinforced concrete bridge decks, which include diffusion models for the prediction of chloride ingress into concrete and steel corrosion and thick-walled cylinder models for the prediction of stresses induced by the accumulating corrosion products in the concrete cover. The proposed approach is illustrated on the life cycle design and management of highway bridge decks using normal and high performance concrete. It is shown that the high performance concrete deck alternative is a Pareto optimum , while the normal concrete deck is found to be a dominated solution in terms in terms of life cycle costs and environmental impacts.

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“…More recently, researchers have attempted to include environmental costs in LCCA to consider bridge structure sustainability (Geryasio and da Silva 2008; Kendall et al 2008). LCCA has also been performed on pre-cast composite bridge decks (Hastak et al 2003;Ehlen and Marshall 1996;Ehlen 1999;Meiarashi et al 2002;Nystrom et al 2003;Chandler 2004). Additional work on LCCA was conducted that emphasized inclusion of cost, deterioration, and load uncertainties (Frangopol et al 2001;Thoft-Christensen 2009;Daigle and Lounis 2006;Furuta et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Life-Cycle Cost Analysis of Alternative Reinforcement Materials for Bridge Superstructures Considering Cost and Maintenance Uncertainties

Eamon

Jensen

Grace

et al. 2012

J. Mater. Civ. Eng.

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A life cycle cost analysis (LCCA) was conducted on prestressed concrete bridges 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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The economics of new-technology materials:

Cited by 23 publications

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MEMRRES: model for evaluating maintenance, repair and rehabilitation strategies in concrete bridge decks

MEMRRES: model for evaluating maintenance, repair and rehabilitation strategies in concrete bridge decks

Multi-objective and probabilistic decision-making approaches to sustainable design and management of highway bridge decks

Life-Cycle Cost Analysis of Alternative Reinforcement Materials for Bridge Superstructures Considering Cost and Maintenance Uncertainties

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