Cleaner technologies for asphalt mixtures combining reuse of residual aggregates, waste crumb rubber and warm mix asphalt additive

The reuse of waste materials and residual aggregates as well as the reduction of emissions has become vitally important for the environment, the economy and logistics of the asphalt paving industry. This study characterizes the performance and production properties of asphalt mixtures with waste cru...

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Bibliographic Details
Published in:Scientific reports 2023-05, Vol.13 (1), p.8153-8153, Article 8153
Main Authors: Franesqui, Miguel A., Rodríguez-Alloza, Ana María, Yepes, Jorge, García-González, Cándida
Format: Article
Language:English
Subjects:
639/166
639/166/986
Aggregates
Asphalt
Asphalt pavements
Emissions
Emissions control
Energy consumption
Humanities and Social Sciences
multidisciplinary
Paving
Rubber
Science
Science (multidisciplinary)
Sustainable materials
Tires
Waste materials
Waste recycling
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Summary:The reuse of waste materials and residual aggregates as well as the reduction of emissions has become vitally important for the environment, the economy and logistics of the asphalt paving industry. This study characterizes the performance and production properties of asphalt mixtures with waste crumb-rubber modifier from scrap tires, a warm mix asphalt surfactant additive and residual poor-quality volcanic aggregates as the single mineral component. The combination of these three cleaner technologies provides a promising solution to produce more sustainable materials by reusing two different types of waste and decreasing the manufacturing temperature at the same time. The compactability, stiffness modulus and fatigue performance characteristics were assessed in the laboratory for different low production temperatures and compared to conventional mixtures. The results indicate that these rubberized warm asphalt mixtures with residual vesicular and scoriaceous aggregates comply with the technical specifications for paving materials. The dynamic properties are maintained or even improved while reusing waste materials and allowing reductions of the manufacturing and compaction temperatures up to 20 °C, therefore, decreasing energy consumption and emissions.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-35235-z