A comprehensive life cycle costs analysis of in-place recycling and conventional pavement construction and maintenance practices

Santos, João; Bryce, James; Flintsch, Gerardo W.; Ferreira, Adelino

doi:10.1080/10298436.2015.1122190

Cited by 44 publications

(27 citation statements)

References 21 publications

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“…An LCCA is a structured methodology used to quantify the potential economic impacts of a product from cradle to grave (Santos, Bryce, Flintsch, & Ferreira, ). In this study, the LCCA was conducted to compare the life‐cycle costs (LCC) of pavements with the original asphalt binder (i.e., PG 70‐22 used in the asphalt mixture SM‐12.5D) and the upgraded binder (i.e., PG 76‐22 used in the asphalt mixture SM‐12.5E), under the baseline and future climate conditions.…”

Section: Pavement Life‐cycle Cost Modelmentioning

confidence: 99%

Climate change impacts on asphalt road pavement construction and maintenance: An economic life cycle assessment of adaptation measures in the State of Virginia, United States

Qiao

Santos

Stoner

et al. 2019

J of Industrial Ecology

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Pavement design and management practices must be adapted in response to future climate change. While many studies have attempted to identify different methods to adapt pavements to future climate conditions, the potential economic impacts of the adaptations still remain largely unquantified. This study presents the results of a comprehensive life-cycle cost analysis (LCCA) aimed at quantifying the potential economic impacts of a climate adaptation method, in which an upgraded asphalt binder (Performance Grade PG 76-22) is used in the construction and maintenance of flexible pavement sections in lieu of the original binder (PG 70-22) for improved resistance against high temperatures. For each of three major Virginia Department of Transportation (VDOT) districts with different climates, three case studies consisting of typical interstate, primary, and secondary pavement sections were considered. The LCCA accounted for the costs incurred during the mixture's production, maintenance, and use phases of the pavement life cycle by explicitly considering future climate projections, pavement life-cycle performance, maintenance effects, and work zone user delays. The study concludes that pavements using the upgraded binder not only perform better over time but are also economically advantageous compared to those with the original binder under the conditions of the anticipated future climate conditions (2020-2039). K E Y W O R D S adaptation, climate change, climate model downscaling, flexible pavement, life-cycle cost analysis, maintenance effects

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Section: Pavement Life‐cycle Cost Modelmentioning

confidence: 99%

Climate change impacts on asphalt road pavement construction and maintenance: An economic life cycle assessment of adaptation measures in the State of Virginia, United States

Qiao

Santos

Stoner

et al. 2019

J of Industrial Ecology

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“…Life cycle highway agency costs (LCHAC) This indicator comprises the total costs incurred by the highway or transportation agency over the life of the project to construct and maintaining a pavement structure above a determined quality level. They typically include initial costs (e.g., preliminary engineering, contract administration, supervision and construction costs) and future costs (i.e., M&R costs and the EOL fate-related costs) (Santos et al, 2017b). The data required to determine the agency costs are usually obtained from historical records, current bids, and engineering judgments.…”

Section: Economic Indicatorsmentioning

confidence: 99%

SUP&R DSS: A sustainability-based decision support system for road pavements

Santos

Bressi

Cerezo³

et al. 2019

Journal of Cleaner Production

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As pavement community members head into the future, the increasing social pressure towards the incorporation of sustainable principles into their work urge them (1) to come up with new materials and practices that reduce the negative impacts of their activities in the surroundings and (2) to develop methodologies and tools to encourage sustainable decision-making. To this end, this paper presents the development of a life cycle, performance-based, sustainability decision support system (DSS) for helping decision-makers (DMs)/stakeholders to prioritize alternative technologies for transportation systems with the ultimate objective of fostering sustainability in transportation projects. The framework relies on a multi-criteria decision analysis (MCDA) method to rank the sustainability of alternatives based on their life cycle sustainability performances and the relative priorities with respect to each environmental, economic and social criterion. The applicability of the proposed DSS is illustrated by means of a case study that aims to identify the most sustainable asphalt mixture amongst several promising options ranging from low to hot temperature asphalt for wearing courses of flexible road pavements. The sustainability assessment applies life cycle-based approaches to quantify the values of a set of indicators purposely and methodologically selected to capture the cause-effect link between the general concepts of the three Wellbeing dimensions of sustainability, i.e., environmental, economic and social, and the infrastructure construction and maintenance practice. The results show that a foamed WMA mixture with a RAP content of 50% is the most sustainable among the competing alternatives. Furthermore, a sensitivity analysis conducted to investigate the influence of indicators weights and parameters of the MCDA method on the stability of the ranking showed that its first position in the ranking remained unaffected.

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“…The perspective of life-cycle cost (LCC) is more useful to the highways administrations as they are managing the infrastructure throughout its life span. Apart from the administration costs, LCC analysis has been increasingly considering the stakeholders standpoint by including the user costs and the environmental costs [109].…”

Section: Direct Costsmentioning

confidence: 99%

Feasibility Assessment of the Use of Recycled Aggregates for Asphalt Mixtures

2018

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The use of recycled aggregates, manufactured from several by-products, to replace virgin aggregates in the production of pavement asphalt mixtures needs to be encouraged. Nevertheless, there are some concerns and uncertainties about the actual environmental, economic and mechanical performance resulting from the incorporation of recycled aggregates in asphalt mixtures. Therefore, this paper has the goal of discussing important features to help decision makers to select recycled aggregates as raw materials for asphalt mixtures. Based on the literature review carried out and the own previous experience of the authors, the article's main findings reveal that incorporating some of the most common recycled aggregates into asphalt mixtures is feasible, even in a life-cycle analysis perspective. Although some specific technical operations are sometimes necessary when using recycled aggregates in asphalt mixtures, some benefits in terms of environmental impacts, energy use and costs are likely to be achieved, as well as in what concerns the mechanical performance of the asphalt mixtures.

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A comprehensive life cycle costs analysis of in-place recycling and conventional pavement construction and maintenance practices

Cited by 44 publications

References 21 publications

Climate change impacts on asphalt road pavement construction and maintenance: An economic life cycle assessment of adaptation measures in the State of Virginia, United States

Climate change impacts on asphalt road pavement construction and maintenance: An economic life cycle assessment of adaptation measures in the State of Virginia, United States

SUP&R DSS: A sustainability-based decision support system for road pavements

Feasibility Assessment of the Use of Recycled Aggregates for Asphalt Mixtures

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