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Evaluation of Reductions in Fume Emissions (VOCs and SVOCs) from Warm Mix Asphalt Incorporating Natural Zeolite and Reclaimed Asphalt Pavement for Sustainable Pavements

Author

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  • Javier Espinoza

    (Chemical Ecology Laboratory, Department of Chemical Sciences and Natural Resources, University of La Frontera, Temuco 4811230, Chile
    Biotechnological Research Center Applied to the Environment (CIBAMA), University of La Frontera, Temuco 4811230, Chile)

  • Cristian Medina

    (Chemical Ecology Laboratory, Department of Chemical Sciences and Natural Resources, University of La Frontera, Temuco 4811230, Chile
    Biotechnological Research Center Applied to the Environment (CIBAMA), University of La Frontera, Temuco 4811230, Chile)

  • Alejandra Calabi-Floody

    (The Department of Civil Works Engineering, University of La Frontera, Temuco 4811230, Chile)

  • Elsa Sánchez-Alonso

    (The Department of Civil Works Engineering, University of La Frontera, Temuco 4811230, Chile)

  • Gonzalo Valdés

    (The Department of Civil Works Engineering, University of La Frontera, Temuco 4811230, Chile)

  • Andrés Quiroz

    (Chemical Ecology Laboratory, Department of Chemical Sciences and Natural Resources, University of La Frontera, Temuco 4811230, Chile
    Biotechnological Research Center Applied to the Environment (CIBAMA), University of La Frontera, Temuco 4811230, Chile)

Abstract

Conventional asphalt mixtures used for road paving require high manufacturing temperatures and therefore high energy expenditure, which has a negative environmental impact and creates risk in the workplace owing to high emissions of pollutants, greenhouse gases, and toxic fumes. Reducing energy consumption and emissions is a continuous challenge for the asphalt industry. Previous studies have focused on the reduction of emissions without characterizing their composition, and detailed characterization of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) in asphalt fumes is scarce. This communication describes the characterization and evaluation of VOCs and SVOCs from asphalt mixtures prepared at lower production temperatures using natural zeolite; in some cases, reclaimed asphalt pavement (RAP) was used. Fumes were extracted from different asphalt mix preparations using a gas syringe and then injected into hermetic gas sample bags. The compounds present in the fumes were sampled with a fiber and analyzed by gas-liquid chromatography coupled to mass spectrometry (GC/MS). In general, the preparation of warm mix asphalts (WMA) using RAP and natural zeolite as aggregates showed beneficial effects, reducing VOCs and SVOCs compared to hot mix asphalts (HMA). The fumes captured presented a similar composition to those from HMA, consisting principally of saturated and unsaturated aliphatic hydrocarbons and aromatic compounds but with few halogenated compounds and no polycyclic aromatic hydrocarbons. Thus, the paving mixtures described here are a friendlier alternative for the environment and for the health of road workers, in addition to permitting the re-use of RAP.

Suggested Citation

  • Javier Espinoza & Cristian Medina & Alejandra Calabi-Floody & Elsa Sánchez-Alonso & Gonzalo Valdés & Andrés Quiroz, 2020. "Evaluation of Reductions in Fume Emissions (VOCs and SVOCs) from Warm Mix Asphalt Incorporating Natural Zeolite and Reclaimed Asphalt Pavement for Sustainable Pavements," Sustainability, MDPI, vol. 12(22), pages 1-17, November.
  • Handle: RePEc:gam:jsusta:v:12:y:2020:i:22:p:9546-:d:446138
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    References listed on IDEAS

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    1. Igor Burstyn & Hans Kromhout, 2000. "Are the Members of a Paving Crew Uniformly Exposed to Bitumen Fume, Organic Vapor, and Benzo(a)pyrene?," Risk Analysis, John Wiley & Sons, vol. 20(5), pages 653-664, October.
    2. Thives, Liseane Padilha & Ghisi, Enedir, 2017. "Asphalt mixtures emission and energy consumption: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 72(C), pages 473-484.
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    Cited by:

    1. Leonardo Sierra & Felipe Araya & Víctor Yepes, 2021. "Consideration of Uncertainty and Multiple Disciplines in the Determination of Sustainable Criteria for Rural Roads Using Neutrosophic Logic," Sustainability, MDPI, vol. 13(17), pages 1-15, September.
    2. Kátia Aline Bohn & Liseane Padilha Thives & Luciano Pivoto Specht, 2023. "Physical, Rheological, and Permanent Deformation Behaviors of WMA-RAP Asphalt Binders," Sustainability, MDPI, vol. 15(18), pages 1-21, September.

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