Life cycle assessment of low temperature asphalt mixtures for road pavement surfaces: A comparative analysis

Santos, João; Bressi, Sara; Cerezo, Véronique; Presti, Davide Lo; Dauvergne, Michel

doi:10.1016/j.resconrec.2018.07.012

Cited by 68 publications

(48 citation statements)

References 24 publications

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“…impacts produced by the on-road vehicles when experiencing a disruption of the normal traffic flow due to the perturbations associated with a WZ traffic management plan; and (v) usage, which models the interactions of the pavement with vehicles and environment throughout the PAP. For further details on the features of the LCA study the reader is referred to Santos et al (2018c).…”

Section: General Descriptionmentioning

confidence: 99%

A fuzzy logic expert system for selecting optimal and sustainable life cycle maintenance and rehabilitation strategies for road pavements

Santos

Torres-Machí

Morillas

et al. 2020

International Journal of Pavement Engineering

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Aged road pavements and insufficient maintenance budgets, along with increasing concerns over the environmental issues related to transportation have introduced additional challenges to highway agencies. Multiobjective optimisation techniques can be used to account for those multiple aspects in the design of maintenance and rehabilitation (M&R) strategies. Contrary to the single-objective optimisation problems where a single solution is optimal, the solution of multiobjective optimisation problems is a set of non-dominated solutions, often referred to as Pareto-optimal set. This set of optimal solutions represents the trade-off between the different and often conflicting objectives, and in many cases is comprised by a vast number of elements. This paper presents the development and application of a fuzzy logic expert system for selecting a single solution from the Pareto set obtained from the multiobjective optimisation of sustainable pavement M&R strategies. It provides decisionmakers with an easy and intuitive methodology for the selection of the most preferred solution according to sustainability criteria. The proposed system is applied to a case study from France. Posteriorly, different strategies reflecting the decision-maker's preferences towards economic and environmental objectives are analysed. Conclusions and recommendations for future improvements are derived from this application.

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Section: General Descriptionmentioning

confidence: 99%

A fuzzy logic expert system for selecting optimal and sustainable life cycle maintenance and rehabilitation strategies for road pavements

Santos

Torres-Machí

Morillas

et al. 2020

International Journal of Pavement Engineering

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“…The LCA functional unit creates the basis for comparing the different structure scenarios with the same utility for an equivalent function [12,67,68]. In this case, it involved a pavement unit that carried the same number of vehicles per year, over the same project analysis period (PAP).…”

Section: Functional Unitmentioning

confidence: 99%

“…In this case, it involved a pavement unit that carried the same number of vehicles per year, over the same project analysis period (PAP). This period comprised the different periods referred to by different authors and specifications [6,9,29,67,[69][70][71][72][73]. The functional unit presented in this LCA was a real 1 km-long road section of a two-lane roadway, one in each direction, with an individual width of 3.5 m each and a total PAP of 69 years, from 1946 to 2015.…”

Section: Functional Unitmentioning

confidence: 99%

Assessment of Eco-Friendly Pavement Construction and Maintenance Using Multi-Recycled RAP Mixtures

et al. 2020

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The demand for more sustainable solutions has led an ever-growing number of stakeholders to being committed to pursue the principles of sustainability in pavement management. Different stakeholders have been looking for tools and methodologies to evaluate the environmental impacts of the solutions, for which the life cycle assessment (LCA) proved to be an appropriate methodology. This paper is focused on the LCA of road pavement multi-recycling based on the use of bituminous mixtures with high rates of reclaimed asphalt pavement (RAP). In order to promote the circular economy, a comparative analysis was performed on a road pavement section by taking into account different scenarios, which stem from the combination of production, construction and rehabilitation activities incorporating different RAP rates in new bituminous mixtures: 0% (as reference), 25%, 50%, 75% and 100%, respectively. LCA results have been expressed in terms of four damage categories: human health, ecosystem quality, climate change and resources. Results have shown that both recycled and multi-recycled bituminous mixtures lead to substantial benefits in comparison with the solution employing virgin materials, hence embodying a sustainable approach. The benefits grow with the increase in the RAP rate with an average decrease of 19%, 23%, 31% and 33% in all the impact categories for a 25%, 50%, 75% and 100% of RAP rate.

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“…The limited availability of certain mineral aggregates and crude oil that are fit for the production of bitumen has become a major concern to the industry with the effect that recycling and reuse have become well established practices in many countries. Increasing reclaimed asphalt pavement (RAP) content is highly environmentally beneficial since it could avoid long distance aggregate transport and it generally allows fresh bitumen content reduction in mixes (Wayman 2012, Santos 2014, Santos 2017, Santos 2018. One of the key technical issues is to take advantages of the remaining bitumen in RAP, even if its physical state is too brittle and stiff to meet virgin binder criteria (Lo Presti 2016, Del Barco Carrion 2015).…”

Section: Full-scale Validation Of Bio-recycled Asphalt Mixtures For Rmentioning

confidence: 99%

Full-scale validation of bio-recycled asphalt mixtures for road pavements

Blanc¹,

Huard²,

Sotoodeh-Nia

et al. 2019

Journal of Cleaner Production

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Recycling of asphalt has become a well-established practice in many countries, however the road pavement industry remains a bulk consumer of extracted raw materials. Novel solutions that find root in circular economy concepts and life-cycle approaches are needed in order to enable optimisation of infrastructure resource efficiency, starting from the design stage and spanning the whole value chain in the construction sector. Itis within this framework that the present study presents a full-scale validation of asphalt mixtures specifically designed to ensure durability of flexible road pavements and at the same time enabling the reuse of reclaimed asphalt pavement (RAP) through the incorporation of bio-materials as recycling agent. These bio-recycled asphalt mixtures have been first designed in laboratory and subsequently validated in a real scale experiment conducted at the accelerated pavement testing facilities at IFSTTAR. Four pavement sections were evaluated: three test sections with innovative bio-materials, and a reference section with a conventional, high modulus asphalt mix (EME2). Two tests were realized: a rutting test and a fatigue test and for each of them the evolution of bio-recycled asphalt mixtures properties as well as the pavement deteriorations were recorded and studied. Evolution of the bio-asphalt mixtures was monitored for a 5 months period after paving by a bespoke nondestructive micro-coring, extracting and recovering methodology developed at the Western Research Institute (WRI). The structural health of the pavement sections was monitored through periodic falling weight deflectometer (FWD) as well as with strain gages and temperature sensors. As a result the three tailored bio-asphalt mixtures performed similarly or better than the control mixture, both in terms of property evolutions and durability.

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Life cycle assessment of low temperature asphalt mixtures for road pavement surfaces: A comparative analysis

Abstract: Life Cycle Assessment of low temperature asphalt mixtures for road pavement surfaces: a comparative analysis. Resources, Conservation and Recycling, Elsevier, 2018, pp.

Cited by 68 publications

References 24 publications

A fuzzy logic expert system for selecting optimal and sustainable life cycle maintenance and rehabilitation strategies for road pavements

A fuzzy logic expert system for selecting optimal and sustainable life cycle maintenance and rehabilitation strategies for road pavements

Assessment of Eco-Friendly Pavement Construction and Maintenance Using Multi-Recycled RAP Mixtures

Full-scale validation of bio-recycled asphalt mixtures for road pavements

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