Recent advances in the construction of sustainable asphalt roads with recycled plastic

Enfrin, Marie; Giustozzi, Filippo

doi:10.1002/pi.6405

Cited by 20 publications

(11 citation statements)

References 55 publications

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“…For many practical uses, it has to be combined with components that provide material properties. Carbonized leather has been used as a filler in lightweight constructional cement materials [ 101 ], an additive to mortar in construction materials [ 102 ] or bitumen binder [ 70 , 71 ], and as an alternative for recycled plastics [ 103 ].…”

Section: Applicationsmentioning

confidence: 99%

Carbonized Leather Waste: A Review and Conductivity Outlook

et al. 2023

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The carbonization of collagen-based leather waste to nitrogen-containing carbon is reviewed with respect to the preparation, characterization of carbonized products, and applications proposed in the literature. The resulting nitrogen-containing carbons with fibrous morphology have been used as adsorbents in water pollution treatment, in electrocatalysis, and especially in electrodes of energy-storage devices, such as supercapacitors and batteries. Although electrical conductivity has been implicitly exploited in many cases, the quantitative determination of this parameter has been addressed in the literature only marginally. In this report, attention has been newly paid to the determination of conductivity and its dependence on carbonization temperature. The resulting powders cannot be compressed into pellets for routine conductivity determination. A new method has been used to follow the resistivity of powders as a function of pressure up to 10 MPa. The conductivity at this pressure increased from 9.4 × 10−8 S cm−1 for carbonization at 500 °C to 5.3 S cm−1 at 1000 °C. The conductivity of the last sample was comparable with conducting polymers such as polypyrrole. The carbonized leather thus has the potential to be used in applications requiring electrical conduction.

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Section: Applicationsmentioning

confidence: 99%

Carbonized Leather Waste: A Review and Conductivity Outlook

et al. 2023

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“…In addition, post-consumer recycled plastics normally used for plastic road construction contain hazardous non-intentionally added substances with various concentrations and nature depending on their composition, manufacturing, and recycling process [ 162 , 163 ]. These substances are concerning since the high temperatures (up to 180 °C) used during the production of bitumen can generate the desorption of the hazardous compounds and expose roadworkers to toxic compounds [ 164 ].…”

Section: Environmental and Human Health Adverse Effects Of Plastic Roadsmentioning

confidence: 99%

“…Alternatively, accelerated pavement testing using Heavy Vehicle Simulator or Pavement Fatigue Carousel is currently being used to test the surface and structural changes of asphalt [ 171 , 172 ]. However, some parameters including gaseous emissions level when laying hot asphalt and the release of microplastics when plastic-modified roads are open to traffic due to abrasion exerted by vehicle tires cannot be assessed via accelerated pavement testing [ 164 ].…”

Section: Environmental and Human Health Adverse Effects Of Plastic Roadsmentioning

confidence: 99%

Plastic Roads in Asia: Current Implementations and Should It Be Considered?

et al. 2023

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The rapid economic and industrial growth experienced in the Asian region has significantly increased waste production, particularly single-use plastic. This surge in waste poses a significant challenge for these countries’ municipal solid waste management systems. Consequently, there is a pressing need for progressive and effective solutions to address the plastic waste issue. One promising initiative involves utilizing used plastic to produce components for asphalt pavement. The concept of plastic road technology has gained traction in Asia, with 32 countries displaying varying levels of interest, ranging from small-scale laboratory experiments to large-scale construction projects. However, as a relatively new technology, plastic road implementation requires continuous and comprehensive environmental and health risk assessments to ascertain its viability as a reliable green technology. This review paper presents the current findings and potential implementation of plastic-modified asphalt in Asian countries, with particular attention given to its environmental and human health impacts. While plastic asphalt roads hold promise in waste reduction, improved asphalt properties, and cost savings, it is imperative to thoroughly consider the environmental and health impacts, quality control measures, recycling limitations, and long-term performance of this road construction material. Further research and evaluation are needed to fully understand the viability and sustainability of plastic asphalt roads. This will enable a comprehensive assessment of its potential benefits and drawbacks, aiding in developing robust guidelines and standards for its implementation. By addressing these considerations, it will be possible to optimize the utilization of plastic waste in road construction and contribute to a greener and more sustainable future.

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“…15 Enfrin and Giustozzi investigate the challenges related to the production, performance and durability of plastic modified asphalt in the construction of sustainable asphalt roads using recycled plastic. 16 Challenges include the wide variability in plastic composition/properties after recycling, representative testing procedures. Recent advances in the field are presented and future work to address current research and industrial gaps are highlighted.…”

Section: Fate Post-consumption/utilisationmentioning

confidence: 99%

“…The lack of effective agricultural plastic waste collection services, inequitable enforcement of plastic waste management regulations and rising costs of waste plastic collection in the UK which make it difficult for them to be effectively recycled 15 . Enfrin and Giustozzi investigate the challenges related to the production, performance and durability of plastic modified asphalt in the construction of sustainable asphalt roads using recycled plastic 16 . Challenges include the wide variability in plastic composition/properties after recycling, representative testing procedures.…”

Section: Fate Post‐consumption/utilisationmentioning

confidence: 99%