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

Eamon, Christopher D.; Jensen, Elin; Grace, Nabil F.; Shi, Xiuwei

doi:10.1061/(asce)mt.1943-5533.0000398

Cited by 61 publications

(36 citation statements)

References 21 publications

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“…Despite this, it is noted that due to the use of a very high percentage of RAP, experiments demonstrate that the solutions proposed meet a number of sustainability requirements [29][30][31]. Furthermore, these facts illustrate the potential and suitability of the designed mixes for improved pavement life cycles [32][33][34][35]. …”

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confidence: 99%

Improving infrastructure sustainability in suburban and urban areas: is porous asphalt the right answer? and how?

Praticò¹,

Vaiana²

2012

WIT Transactions on the Built Environment

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The goal of this paper is to investigate transportation infrastructure sustainability from a wider standpoint.A sustainable transportation infrastructure can be defined as a safe, efficient, economic, environmentally friendly infrastructure meeting the needs of presentday users without compromising those of future generations. This concept involves environmental, economic and societal aspects.In more detail, as for a road, a sustainable infrastructure or pavement must comply with environmental, economic and social requirements.Unfortunately, even if a definition of a sustainable pavement for urban or suburban areas can be easily proposed, the proposal of practical strategies to really pursue sustainability goals is sometimes disregarded in favour of emphatic announces of not well defined sustainable solutions.In the light of the above facts, the sustainability of a transportation infrastructure based on the actual environmental, social and economic characteristics is discussed in this paper. Once the main factors which can influence infrastructure sustainability are assessed, an analysis is performed in order to set out practical strategies for pursuing the main objective.Finally an experimental investigation is designed and carried out in order to assess porous asphalt value in terms of pavement sustainability. The tests carried out are promising about the possibility of achieving suitable levels of overall performance. Practical applications and perspectives in rehabilitation, maintenance, and research are outlined.

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confidence: 99%

Improving infrastructure sustainability in suburban and urban areas: is porous asphalt the right answer? and how?

Praticò¹,

Vaiana²

2012

WIT Transactions on the Built Environment

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“…A recent life-cycle cost analysis of FRP-reinforced bridges revealed that, while FRP 50 bars may be on the order of 6-8 times more expensive than steel, and the resulting cost of a 51 typical bridge superstructure reinforced with FRP may range from 25-75% higher than its steel-52 reinforced equivalent, reduced maintenance costs can be expected to result in a net cost savings 53 near 20 years of service life. Moreover, considering a 50 to 75 year time span, total life-cycle 54 costs for typical FRP-reinforced bridges were generally predicted to be one-half or less of their 55 steel-reinforced alternatives (Eamon et al 2012). Andrawes 2010).…”

Section: Structural Concrete Reinforced With Frp Bars Aci-4401r (Acmentioning

confidence: 99%

“…Texas (Eamon et al 2012). Although FRP reinforcement has been commercially available for 37 more than a decade, FRP-reinforced structures represent a small portion of new and renovated 38 concrete bridges.…”

Section: Introduction 22mentioning

confidence: 99%

Resistance Factors for Ductile FRP-Reinforced Concrete Flexural Members

Behnam

Eamon

2013

J. Compos. Constr.

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5To prevent damage caused by corroding reinforcement, fiber reinforced polymer (FRP) 6 reinforcing bars have been used in place of steel in a relatively small but increasing number of 7 structures in the civil infrastructure. A concern with the use of traditional FRP bars, however, is 8 the resulting lack of ductility. This problem has been overcome with the development of a new 9 generation of composite reinforcement, ductile hybrid FRP (DHFRP) bars. However, standards 10 that address the design of DHFRP bars are unavailable, and appropriate resistance factors for the 11 use of DHFRP reinforcement are unknown. In this study, a reliability analysis is conducted on 12 tension-controlled concrete flexural members reinforced with DHFRP, with the intent to estimate 13 potential strength reduction factors. Flexural members considered include a selection of 14 representative bridge decks and building beams designed to meet AASHTO LRFD and ACI-318 15 strength requirements and target reliability levels. Nominal moment capacity is calculated from 16 standard analytical models and is taken as first DHFRP material failure. Statistical parameters 17 for load and resistance random variables in the reliability model are consistent with previous 18 code calibration efforts. The resulting resistance factors ranged from 0.61 to 0.64 for tension-19 controlled sections, which indicates a potential increase in allowed strength over flexural 20 members using non-ductile bars.

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“…Although relatively small in number, FRP-reinforced concrete components have been implemented throughout the world as well as in the US, where the construction of various structures have been documented in the technical literature [4]. Currently, the two prevailing US guidelines governing reinforced concrete structural design, The American Association of State and Highway Transportation Officials (AASHTO) Bridge Design Specifications [5] and the American Concrete Institute Building Code Requirements for Structural Concrete, ACI-318 [6], for bridges and buildings, respectively, do not contain detailed guidelines for the use of FRP.…”

Section: Introductionmentioning

confidence: 99%

“…However, the reduced corrosion-induced maintenance costs generally become beneficial in the long run, where life-cycle cost analyses of FRP-reinforced bridges revealed significant cost savings over a 50 to 75 year bridge lifetime, typically resulting in half or less of the total life-cycle cost of corresponding steelreinforced bridges. In the considered cases, cost savings usually began at approximately 20 years into the service life of the bridge [4]. However, with an expected 20-year pay-back period, initial cost is still a major concern, and any initial cost savings are clearly highly desirable.…”

Section: Introductionmentioning

confidence: 99%

Analysis of alternative ductile fiber-reinforced polymer reinforcing bar concepts

Behnam

Eamon

2013

Journal of Composite Materials

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Steel-reinforced concrete structural components are often associated with significant maintenance costs as a result of reinforcement corrosion. To mitigate this problem, fiberreinforced polymer (FRP) bars have been used in place of traditional steel reinforcement for some applications. The non-ductile response of typical FRP bars is a concern, however. To overcome this problem, hybrid ductile FRP (HDFRP) bars have been developed for use in concrete flexural members with resulting ductility indices similar to sections reinforced with steel. In this study, five different HDFRP bar concepts are analyzed and compared in terms of ductility, stiffness, and relative cost. Of primary interest is the effect that the number of materials used in bar construction has on performance. Reinforced concrete beam and bridge deck applications are considered for analysis. It was found that all HDFRP-reinforced flexural members considered could meet code-specified strength and ductility requirements for steelreinforced sections, although service load deflections were approximately twice that of steelreinforced sections of the same depth. In general, ductility increased, and overall material cost decreased, as the bar material layers increased from 2 to 4. The 4-material continuous fiber bar approach was found to be most promising, with high ductility as well as relatively low cost.

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

Cited by 61 publications

References 21 publications

Improving infrastructure sustainability in suburban and urban areas: is porous asphalt the right answer? and how?

Improving infrastructure sustainability in suburban and urban areas: is porous asphalt the right answer? and how?

Resistance Factors for Ductile FRP-Reinforced Concrete Flexural Members

Analysis of alternative ductile fiber-reinforced polymer reinforcing bar concepts

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