Evaluation of Workability and Crack Resistance of Recycled Plastic Asphalt Mixtures.
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| Title: | Evaluation of Workability and Crack Resistance of Recycled Plastic Asphalt Mixtures. |
|---|---|
| Authors: | Jing, Haosen1 (AUTHOR) riccardo.monticelli@unipr.it, Monticelli, Riccardo1,2 (AUTHOR), Graiff, Claudia1,2 (AUTHOR), Bergamonti, Laura2 (AUTHOR), Romeo, Elena1 (AUTHOR) elena.romeo@unipr.it, Tebaldi, Gabriele1 (AUTHOR) gtebaldi@unipr.it |
| Source: | Polymers (20734360). Nov2025, Vol. 17 Issue 21, p2840. 15p. |
| Subjects: | Plastic recycling, Bituminous materials, Thermoplastic composites, R-curves, Feasibility studies, Thermal stability, Asphalt emulsion mixtures, Sustainable development |
| Abstract: | To address the global plastic crisis, recycled plastics from food packaging were used as road materials by the dry method for practical application research. First, the main components of the recycled plastics were identified based on FTIR, and their thermal stability was evaluated through DSC, TG, and microscopic analysis. Then, the workability of the plastic–asphalt mixture was evaluated using the gyratory compaction indicator, void content, and compaction energy index (CEI). Finally, the effect of reused plastics on the cracking resistance of bituminous mixtures was examined with the Superpave IDT test. The results indicate that recycled plastics from food packaging are polyolefin composite materials, primarily consisting of Low-Density Polyethylene (LDPE), Linear Low-Density Polyethylene (LLDPE), High-Density Polyethylene (HDPE), and Polypropylene (PP), and that their thermal stability meets production requirements. Good compaction performance was observed with plastic content below 2% of the aggregate weight, while higher contents reduced void content due to the space occupied by plastics. When the plastic content increased from 0.5% to 2.0%, creep compliance decreased from 68.4% to 77.87%, while the m-value, tensile strength, and elastic energy maximum decreased by 30.77%, 5.6%, and 7%, respectively. In contrast, the failure strain, fracture energy, and maximum DSCE increased by 25.86%, 87.43%, and 133.05%, respectively. The recycled plastic enhanced the toughness of the asphalt mixture, increasing the dissipated energy during crack propagation and improving its resistance to permanent deformation. Moreover, the plastics hindered crack propagation through a bridging effect, leading to fewer cracks within plastic zones compared with surrounding areas. This study provides actionable guidance for the application of composite plastics in asphalt pavements and supports their sustainable development. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 189608476 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Evaluation of Workability and Crack Resistance of Recycled Plastic Asphalt Mixtures. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jing%2C+Haosen%22">Jing, Haosen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> riccardo.monticelli@unipr.it</i><br /><searchLink fieldCode="AR" term="%22Monticelli%2C+Riccardo%22">Monticelli, Riccardo</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Graiff%2C+Claudia%22">Graiff, Claudia</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bergamonti%2C+Laura%22">Bergamonti, Laura</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Romeo%2C+Elena%22">Romeo, Elena</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> elena.romeo@unipr.it</i><br /><searchLink fieldCode="AR" term="%22Tebaldi%2C+Gabriele%22">Tebaldi, Gabriele</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> gtebaldi@unipr.it</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Nov2025, Vol. 17 Issue 21, p2840. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Plastic+recycling%22">Plastic recycling</searchLink><br /><searchLink fieldCode="DE" term="%22Bituminous+materials%22">Bituminous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Thermoplastic+composites%22">Thermoplastic composites</searchLink><br /><searchLink fieldCode="DE" term="%22R-curves%22">R-curves</searchLink><br /><searchLink fieldCode="DE" term="%22Feasibility+studies%22">Feasibility studies</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Asphalt+emulsion+mixtures%22">Asphalt emulsion mixtures</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainable+development%22">Sustainable development</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: To address the global plastic crisis, recycled plastics from food packaging were used as road materials by the dry method for practical application research. First, the main components of the recycled plastics were identified based on FTIR, and their thermal stability was evaluated through DSC, TG, and microscopic analysis. Then, the workability of the plastic–asphalt mixture was evaluated using the gyratory compaction indicator, void content, and compaction energy index (CEI). Finally, the effect of reused plastics on the cracking resistance of bituminous mixtures was examined with the Superpave IDT test. The results indicate that recycled plastics from food packaging are polyolefin composite materials, primarily consisting of Low-Density Polyethylene (LDPE), Linear Low-Density Polyethylene (LLDPE), High-Density Polyethylene (HDPE), and Polypropylene (PP), and that their thermal stability meets production requirements. Good compaction performance was observed with plastic content below 2% of the aggregate weight, while higher contents reduced void content due to the space occupied by plastics. When the plastic content increased from 0.5% to 2.0%, creep compliance decreased from 68.4% to 77.87%, while the m-value, tensile strength, and elastic energy maximum decreased by 30.77%, 5.6%, and 7%, respectively. In contrast, the failure strain, fracture energy, and maximum DSCE increased by 25.86%, 87.43%, and 133.05%, respectively. The recycled plastic enhanced the toughness of the asphalt mixture, increasing the dissipated energy during crack propagation and improving its resistance to permanent deformation. Moreover, the plastics hindered crack propagation through a bridging effect, leading to fewer cracks within plastic zones compared with surrounding areas. This study provides actionable guidance for the application of composite plastics in asphalt pavements and supports their sustainable development. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym17212840 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 2840 Subjects: – SubjectFull: Plastic recycling Type: general – SubjectFull: Bituminous materials Type: general – SubjectFull: Thermoplastic composites Type: general – SubjectFull: R-curves Type: general – SubjectFull: Feasibility studies Type: general – SubjectFull: Thermal stability Type: general – SubjectFull: Asphalt emulsion mixtures Type: general – SubjectFull: Sustainable development Type: general Titles: – TitleFull: Evaluation of Workability and Crack Resistance of Recycled Plastic Asphalt Mixtures. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jing, Haosen – PersonEntity: Name: NameFull: Monticelli, Riccardo – PersonEntity: Name: NameFull: Graiff, Claudia – PersonEntity: Name: NameFull: Bergamonti, Laura – PersonEntity: Name: NameFull: Romeo, Elena – PersonEntity: Name: NameFull: Tebaldi, Gabriele IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 17 – Type: issue Value: 21 Titles: – TitleFull: Polymers (20734360) Type: main |
| ResultId | 1 |
