Future recyclability of hot mix asphalt containing recycled plastics

Dai, Lu; Enfrin, Marie; Boom, Yeong Jia; Giustozzi, Filippo

doi:10.1016/j.conbuildmat.2023.130396

Cited by 10 publications

(5 citation statements)

References 21 publications

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“…A study conducted by Lu et al concluded that the studied recycled plastic-modified asphalt mixtures are recyclable and provide similar properties compared with the reference (non-modified) RAP. According to this study, the incorporation of 30% RAP-containing recycled plastic in new asphalt mixtures did not have any adverse effects on their cracking and rutting performances [20].…”

Section: Introduction 1state-of-the-knowledgementioning

confidence: 52%

Investigating the Multi-Recyclability of Recycled Plastic-Modified Asphalt Mixtures

et al. 2023

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Although the benefits of asphalt recycling have been scientifically proven and several best practices are being implemented, further research is required in specific and specialized areas. One of these circumstances is the recycling of Reclaimed Asphalt Pavements (RAPs) that contain asphalt modifiers such as elastomers and/or plastomers. Following the principles of the circular economy and considering the sustainability implications of asphalt mixtures, this paper deals with the multi-recyclability of asphalt mixtures containing 50% RAP with and without a recycled plastic asphalt modifier and rejuvenating agent. The recycled plastic asphalt modifier was made of hard recycled plastics and was introduced to the mixture via a dry method. The research focuses on the characterization of binders via conventional, rheological, and chemical analysis. To control the consistency and variables of the mixtures, the RAP was produced artificially in the laboratory following an ageing protocol for loose asphalt mixtures. According to the obtained results, at all three cycles of binder recycling, comparable properties for (i) the extracted binders from the recycled plastic-modified asphalt mixture, (ii) the extracted binders from the control un-modified mixture, and (iii) the reference bitumen 50/70 were obtained. This was even noticed when a nearly similar quantity of the rejuvenator was needed during the rejuvenator optimization process. Overall, it can be deduced that from the binder-scale point of view, the mixture containing the introduced recycled plastic additive could be recycled for multiple life cycles without any degradation of its mechanical and physical properties.

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Section: Introduction 1state-of-the-knowledgementioning

confidence: 52%

Investigating the Multi-Recyclability of Recycled Plastic-Modified Asphalt Mixtures

et al. 2023

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“…On the other hand, while polymers are known for their endurance and accessibility, a downside to their usage is the accumulation of substantial quantities of complex and challengingto-handle waste with high molecular weights [22,75]. In recent times, researchers have investigated the possibility of utilizing waste polymers as modifiers in order to reduce expenses and promote environmental sustainability [22,23,75,76]. Consequently, the topic of using waste polymers for bituminous binders is currently the subject of many review papers [21][22][23]76].…”

Section: Radiation Treatment and Grafting Strategies For Reclaimed Po...mentioning

confidence: 99%

“…In recent times, researchers have investigated the possibility of utilizing waste polymers as modifiers in order to reduce expenses and promote environmental sustainability [22,23,75,76]. Consequently, the topic of using waste polymers for bituminous binders is currently the subject of many review papers [21][22][23]76].…”

Section: Radiation Treatment and Grafting Strategies For Reclaimed Po...mentioning

confidence: 99%

Radiation and Radical Grafting Compatibilization of Polymers for Improved Bituminous Binders—A Review

Baranowska,

Rzepna,

Ostrowski

et al. 2024

Materials

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This review scrutinizes current research on new methods for enhancing bituminous binder performance through radiation and radical grafting of polymer modifiers of bitumen. It investigates innovative methods, including using waste polymers as modifiers and applying radiation for polymer grafting, to overcome challenges like high costs, low aging resistance, and storage stability issues, of which separation of phases polymer/bitumen is the most significant obstacle. These advanced modification techniques promise sustainability through the decrease of the carbon footprint of transportation systems by improving the properties and durability of binders. Additionally, this review discusses the parameters and mechanistic aspects from a scientific perspective, shedding light on the underlying processes that contribute to the improved performance of modified bituminous binders.

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“…On the other hand, while polymers are known for their endurance and accessibility, a downside to their usage is the accumulation of substantial quantities of complex and challenging-to-handle waste with high molecular weights [21,69]. In recent times, researchers have investigated the possibility of utilizing of waste polymers as modifiers in order to reduce expenses and promote environmental sustainability [21,22,69,70]. Consequently, the topic of using waste polymers for bituminous binders is currently the subject of many review papers [20][21][22]70].…”

Section: Radiation Treatment and Grafting Strategies For Reclaimed Po...mentioning

confidence: 99%

“…In recent times, researchers have investigated the possibility of utilizing of waste polymers as modifiers in order to reduce expenses and promote environmental sustainability [21,22,69,70]. Consequently, the topic of using waste polymers for bituminous binders is currently the subject of many review papers [20][21][22]70].…”

Section: Radiation Treatment and Grafting Strategies For Reclaimed Po...mentioning

confidence: 99%

Radiation and Radical Grafting Compatibilization of Polymers for Improved Bituminous Binder Performance

Baranowska,

Rzepna,

Ostrowski

et al. 2024

Preprint

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The review scrutinizes the currently performed research on the new methods for enhancing bituminous binder performance through radiation and radical grafting of polymer modifers of bitumen. It investigates innovative methods, including using waste polymers as modifiers, and applying radiation for polymer grafting, to overcome challenges like high costs, low aging resistance and storage stability issues, of which separation of phases polymer/bitumen is the most significant obstacle. These advanced modification techniques promise sustainability through the decrease of the carbon footprint of transportation systems by improving the properties and durability of binders. Additionally, the review discusses the parameters and mechanistic aspects from a scientific perspective, shedding light on the underlying processes that contribute to the improved performance of modified bituminous binders.

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Future recyclability of hot mix asphalt containing recycled plastics

Cited by 10 publications

References 21 publications

Investigating the Multi-Recyclability of Recycled Plastic-Modified Asphalt Mixtures

Investigating the Multi-Recyclability of Recycled Plastic-Modified Asphalt Mixtures

Radiation and Radical Grafting Compatibilization of Polymers for Improved Bituminous Binders—A Review

Radiation and Radical Grafting Compatibilization of Polymers for Improved Bituminous Binder Performance

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