On the road again! An economic and environmental break-even and hotspot analysis of reclaimed asphalt pavement and rejuvenators

Moins, Ben; Hernando, David; Buyle, Matthias; Wim, Van den bergh; Audenaert, Amaryllis

doi:10.1016/j.resconrec.2021.106014

Cited by 34 publications

(9 citation statements)

References 41 publications

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“…The LCC results show that the minimum cost strategy entails using the PMA and HMAJ, respectively, for the binder and base layer, maximizing the service life and lowering the maintenance cost by 47% compared to those of the baseline reactive strategy with traditional HMA; similar results have been found by Hasan et al [ 55 ], who calculated a 43% reduction in the maintenance cost when using up to 25% recycled aggregates in the base and binder layer of a pavement section compared to a virgin HMA. Additionally, as reported in Table S7 , the longer the service life of the maintenance treatment, the lower the impact on the life cycle costs of the materials production stage [ 56 ].…”

Section: Resultsmentioning

confidence: 99%

Leveraging Infrastructure BIM for Life-Cycle-Based Sustainable Road Pavement Management

et al. 2023

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The latest developments in the field of road asphalt materials and pavement construction/maintenance technologies, as well as the spread of life-cycle-based sustainability assessment techniques, have posed issues in the continuous and efficient management of data and relative decision-making process for the selection of appropriate road pavement design and maintenance solutions; Infrastructure Building Information Modeling (IBIM) tools may help in facing such challenges due to their data management and analysis capabilities. The present work aims to develop a road pavement life cycle sustainability assessment framework and integrate such a framework into the IBIM of a road pavement project through visual scripting to automatically provide the informatization of an appropriate pavement information model and evaluate sustainability criteria already in the design stage through life cycle assessment and life cycle cost analysis methods. The application of the proposed BIM-based tool to a real case study allowed us (a) to draw considerations about the long-term environmental and economic sustainability of alternative road construction materials and (b) to draft a maintenance plan for a specific road section that represents the best compromise solution among the analyzed ones. The IBIM tool represents a practical and dynamic way to integrate environmental considerations into road pavement design, encouraging the use of digital tools in the road industry and ultimately supporting a pavement maintenance decision-making process oriented toward a circular economy.

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Section: Resultsmentioning

confidence: 99%

Leveraging Infrastructure BIM for Life-Cycle-Based Sustainable Road Pavement Management

et al. 2023

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“…where ν i1 and ν i2 are the relative area and perimeter of evaluation object. Calculation method of ν i1 and ν i2 are displayed in Equation (6).…”

Section: Radar Chart Evaluation Methodsmentioning

confidence: 99%

“…The performance of recycled asphalt mixtures was influenced by the material properties and the recycling technology [ 6 , 7 ]. The different sources of RAP had been corroborated to have significant variability in RAM performance [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Assessment of Road Performance of Recycled Asphalt Mixtures Incorporated with Steel Slag

Wang

Yang

et al. 2022

Materials

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Circular utilization of reclaimed asphalt pavement (RAP) has received extensive attention for its economic and environmental benefits. The application of recycled asphalt mixtures (RAM) in the upper layer of asphalt pavement faces the issue of inferior anti-slip performance and durability. This study aims to recycle steel slag as virgin aggregates in RAM and quantitatively evaluate the service performance of RAM with steel slag. Steel slag and basalt RAM were firstly fabricated and the five different RAP contents were involved. Then tests of Marshall stability, indirect tensile strength and Cantabro spatter loss were conducted to investigate the moisture susceptibility of RAM. Moreover, their high temperature stability, crack resistance and skid resistance were characterized. Indirect tensile fatigue test combined with Hamburg wheel tracking test were carried out to discuss the durability of RAM. The comprehensive performance of RAM with steel slag were quantitatively assessed based on an improved radar chart evaluation method. The results show that involving steel slag reveals a remarkable enhancement function on water stability, high and low temperature performance, skid resistance and fatigue resistance of RAM. Steel slag RAM with 50% RAP content demonstrates a rutting depth of 7.60 mm and a creep slope of 2.54 × 10−4, indicating its superior durability in high temperature and water environment. Compared with the comprehensive evaluation function of 0.5336 for basalt RAM with 30% RAP dosage, steel slag RAM reaches 0.7801, which represents its preferable road performance.

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“…In other words, ReCiPe’s single score expresses all the impacts of a given product on the environment using a single value (i.e., points per functional unit, like it is the case for Pt/m 2 in this research). The ReCiPe hierarchist (H) model ensures consideration of the most common policy principles with regards to timeframe and plausibility of impact mechanisms (e.g., using an intermediate timeframe of 100 years for global warming) ( 42 ). To increase the level of detail in this study, the environmental impact was determined using midpoint indicators rather than endpoint indicators.…”

Section: Methodsmentioning

confidence: 99%

Identification of the Main Environmental Impact Categories Over the Life Cycle of Hot Mix Asphalt: An Application to Green Public Procurement

Hernando

Moins

Bergh

et al. 2022

Transportation Research Record: Journal of the Transportation R

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Increased environmental awareness has led road agencies to consider the implementation of green public procurement (GPP). Besides sustainability rating systems, environmental indicators can also be implemented in GPP to help road agencies make informed decisions about the environmental impact of the pavement works they procure. A vast literature review revealed that it is still unclear which impact categories are responsible for the majority of the total environmental impact of asphalt mixtures. The objective of this study was to identify the impact categories with the greatest contribution to the total environmental impact of hot mix asphalt so that they can be implemented in the form of environmental indicators in GPP. The scope included conventional and polymer-modified binder and three mix design alternatives: only virgin aggregate, reclaimed asphalt pavement (RAP), and RAP with rejuvenators. The cradle-to-cradle life cycle assessment (LCA) performed showed that global warming (GW), fine particulate matter formation, fossil resource scarcity, and human non-carcinogenic toxicity were responsible for at least 90% of the total impact according to the ReCiPe 2016 hierarchic assessment method. Therefore, a simplified LCA focusing on these four impact categories seems sufficient for the purpose of comparing the environmental performance of alternatives in GPP. It was also found that GW alone accounted for approximately 50% of the total impact, which seems to make GW a good surrogate for the total impact among the asphalt mixtures evaluated. Future work should investigate whether the conclusions from this study still hold up when using secondary materials, lower temperature mixing technologies, or in-situ recycling.

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On the road again! An economic and environmental break-even and hotspot analysis of reclaimed asphalt pavement and rejuvenators

Cited by 34 publications

References 41 publications

Leveraging Infrastructure BIM for Life-Cycle-Based Sustainable Road Pavement Management

Leveraging Infrastructure BIM for Life-Cycle-Based Sustainable Road Pavement Management

Quantitative Assessment of Road Performance of Recycled Asphalt Mixtures Incorporated with Steel Slag

Identification of the Main Environmental Impact Categories Over the Life Cycle of Hot Mix Asphalt: An Application to Green Public Procurement

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