Use of plastic scrap in asphalt mixtures added by dry method as a partial substitute for bitumen

Movilla-Quesada, D.; Raposeiras, A.C.; Silva-Klein, L.T.; Lastra-González, Pedro; Castro‐Fresno, Daniel

doi:10.1016/j.wasman.2019.03.018

Cited by 98 publications

(57 citation statements)

References 32 publications

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“…Knowing that the decrease in workability leads to an increase in the compaction effort required for reaching the target air void content (Radhi, 2015). For PMIX-C, the results of air void for PMIX-C increase with the increase in plastic content due to a decrease in the workability behavioral of mixtures during the compaction (Movilla-Quesada et al, 2019b). The decrease in workability is greater when a high plastic content was used in the asphalt mixtures.…”

Section: Marshall Stability and The Volumetric Propertiesmentioning

confidence: 99%

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Enhanced Dry Process Method for Modified Asphalt Containing Plastic Waste

et al. 2021

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In recent years, the proliferation of plastic waste has become a global problem. A potential solution to this problem is the dry process, which incorporates plastic waste into asphalt mixtures. However, the dry process often has inconsistent performance due to poor interaction with binder and improper distribution of plastic waste particles in the mixture skeleton. This inconsistency may be caused by inaccurate mixing method, shredding size, mixing temperature and ingredient priorities. Thus, this study aims to improve the consistency of the dry process by comparing the control asphalt mixture and two plastic waste-modified asphalt mixtures prepared using the dry process. This study used crushed granite aggregate with the nominal maximum aggregate size of 14 mm whereas the shredded plastic bag is in the range of 5–10 mm. Quantitative sieving analysis and performance tests were carried out to examine the effects of plastic waste added into the asphalt mixture. The volumetric and performance properties combined with image analysis of the modified mixtures were obtained and compared with the control mixture. In addition, the moisture damage, resilient modulus, creep deformation and rutting were evaluated. This study also highlighted in detail the distribution of plastic particles in the final skeleton of the asphalt mixture. Based on the analysis, an enhanced dry process of mixing procedure was proposed and evaluated. Results showed that the addition of plastic particles using the conventional dry process leads to the deviation in the aggregate structure as high plastic content is added. Furthermore, the enhanced dry process developed in this study presents substantial enhancement in the asphalt performance, particularly with plastic waste that accounts for 20% of the weight of the asphalt binder.

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Section: Marshall Stability and The Volumetric Propertiesmentioning

confidence: 99%

“…Thus, 180°C was selected as the mixing temperature for preparing plastic waste-modified mixtures in this study. This study used two plastic waste content (0.5%, 1%) based on the weight of total aggregate as recommended by previous studies (Movilla-Quesada et al, 2019b;Sasidharan et al, 2019).…”

Section: Plastic Wastementioning

confidence: 99%

Enhanced Dry Process Method for Modified Asphalt Containing Plastic Waste

et al. 2021

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“…The particle size did not have a significant effect, except in the preheating step. [103] A truly mixed waste, i.e. one that was gathered from a municipal waste recycle facility with no sorting, has been studied.…”

Section: Other Strategiesmentioning

confidence: 99%

Waste plastics in asphalt concrete: A review

Grady

2021

SPE Polymers

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Among possible applications for post-consumer waste plastics, one criterion is that the application should be able to use very large amounts of material because the amount of plastic waste is so large. Another key issue is economics; very little cost should be involved in preparing waste plastics for a specific application. One of the few applications for post-consumer waste plastics that could possibly meet both requirements is filler in asphalt concrete. Specifically, if waste plastics in asphalt concrete were 10 wt%, then this application alone could use all plastic waste currently being produced in the world. This review examines the progress that has been made to incorporate waste plastics into asphalt concrete and identifies key issues preventing this technology from being applied commercially.

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“…Peningkatan nisbah crepe rubber dan TMQ merubah berat jenis dari aspal modifikasi menjadi semakin menurun. Penurunan berat jenis menjadi penyebab turunnya persentase VFA (Movilla-Quesada et al, 2019). Persentase VFA berkaitan erat dengan persentase rongga dalam campuran (void in mixture) dan rongga dalam mineral agregat (void mineral aggregate).…”

Section: Hasil Dan Pembahasanunclassified