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Integration of life cycle assessment into a decision support system for selecting sustainable road asphalt pavement mixtures prepared with waste

  • ROADWAYS AND INFRASTRUCTURE
  • Published:
The International Journal of Life Cycle Assessment Aims and scope Submit manuscript

Abstract

Purpose

A challenge that the road paving sector is facing concerns the achievement of highly performing bituminous asphalt mixture solutions that do not negatively impact the environment. New environmentally sound asphalt production and recycling technologies are becoming more and more widespread, but their practical application is still hindered by the lack of appropriate decision-making strategies by the administrations. In this study, innovative asphalt mixtures were compared through a novel multi-criterion and sensitivity analysis framework for selecting the best solutions.

Methods

A new decision support system has been implemented to choose the best paving alternative between nine asphalt mixtures containing different marginal materials for the binder and base layer of a flexible pavement. The methodological steps taken to reach the definition of the optimal solution concerned (1) mechanical analysis of the designed asphalt mixtures by laboratory investigation, (2) calculation of life cycle assessment indicators using the ReCiPe method, (3) application of the ELECTRE method for the identification of the optimal solution on the basis of both mechanical and environmental performance considering a traditional weight vector, and (4) sensitivity analysis based on 27 different configurations of weight vectors.

Results and discussion

The results of this work revealed that the hot asphalt solutions for the binder layer utilizing jet grouting waste and fly ash in substitution of natural fillers reached the best engineering and environmental performance, respectively. Between the asphalt mixtures for the base layer, the cold recycled asphalt containing reclaimed asphalt pavement and jet grouting waste reached, at the same time, the best environmental performance, the minimum value of permanent deformation, and the highest stiffness at 40 °C. The ELECTRE method and sensitivity analysis demonstrated that the purpose of jet grouting for making both hot and cold solutions is the best-compromise solution of environmental and mechanical performance.

Conclusions

The proposed framework allows the quantitative assessment of sustainable road asphalt pavement solutions and fits the needs of several engineering fields where a trade-off between mechanical and environmental performance of multiple construction materials must be established. Future development of this framework could include cost indicators to address the sustainability of the solutions in detail.

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Data availability

All data generated or analysed during this study are included in this published article and its supplementary information files.

Abbreviations

MCDA:

Multi-criterion decision analysis

HMA:

Hot asphalt mixture

OBC:

Optimum bitumen content

S:

Marshall stability

RD:

Rut depth

ITSR:

Indirect tensile strength ratio

LCA:

Life cycle assessment

CIRM:

Cold in-place recycled mixture

CC:

Climate change

M.D.:

Ministerial decree

HMAbinder :

Traditional HMA for binder layer

HMAbinderJGW :

HMA with JGW

HMAbinderCDW :

HMA with CDW

HMAbinderFA :

HMA with FA

HMAbase :

Traditional HMA for base layer

HMAbaseJGW :

HMA with JGW

HMAbaseFA :

HMA with FA

CMRARAP :

Cold mix asphalt reusing RAP

CMRARAPJGW :

Cold mix asphalt adding JGW and RAP

MS:

Marshall stiffness

ITSR:

Indirect tensile strength ratio

ITSM:

Indirect tensile stiffness modulus

Nf:

Fatigue life

LCI:

Life cycle inventory

LCIA:

Life cycle impact assessment

NMVOCs:

Non-methane volatile organic compounds

COD:

Chemical oxygen demand

BOD:

Biological oxygen demand

GWP:

Global warming

ODP:

Stratospheric ozone depletion

IR:

Ionizing radiation

OFT:

Ozone formation on terrestrial ecosystems

OFH:

Ozone formation on human health

PM:

Fine particulate matter formation

A:

Terrestrial acidification

FE:

Freshwater eutrophication

ME:

Marine eutrophication

T-ECO:

Terrestrial ecotoxicities

F-ECO:

Freshwater marine ecotoxicities

M-ECO:

Marine ecotoxicities

CT:

Human carcinogenic toxicities

NCT:

Non-carcinogenic toxicities

LU:

Land use

MR:

Mineral resource scarcity

FR:

Fossil scarcity

W:

Water consumption

HP:

High test temperatures

LP:

Low test temperatures

MP:

Moisture resistance of the asphalt mixtures

EHP:

Environmental and human health performance of the asphalt mixtures

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Correspondence to Rosa Veropalumbo.

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Conflict of interest

The authors declare no competing interests.

Additional information

Communicated by Omer Tatari.

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Supplementary Information

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Supplementary file1 (DOCX 818 KB)

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Cite this article

Oreto, C., Veropalumbo, R., Viscione, N. et al. Integration of life cycle assessment into a decision support system for selecting sustainable road asphalt pavement mixtures prepared with waste. Int J Life Cycle Assess 26, 2391–2407 (2021). https://doi.org/10.1007/s11367-021-01999-7

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  • DOI: https://doi.org/10.1007/s11367-021-01999-7

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