Improved asphalt binder using recycle polyethylene terephthalate polymer

ashoor, Amir. S.; Kareem, Mohanad Mousa; Al-Baiati, Mohammad N.

doi:10.1088/1757-899x/571/1/012094

Cited by 8 publications

(6 citation statements)

References 17 publications

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“…El-Naga and Ragab [ 216 ] used PET for bitumen modification and studied its effect on the overall properties of PET-modified bitumen and PET-modified asphalt mixes. The PET modification tends to decrease penetration and increase softening point, ductility [ 217 ] and viscosity [ 218 ]. Results also showed higher Marshall stiffness modulus, indirect tensile strength and rutting stiffness in comparison to conventional modifiers used in asphalt mixtures [ 219 ].…”

Section: Virgin and Waste (Recycled) Plastomers To Improve Bitumen Performancementioning

confidence: 99%

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

2021

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The failure of bituminous pavements takes place due to heavy traffic loads and weather-related conditions, such as moisture, temperature, and UV radiation. To overcome or minimize such failures, a great effort has been put in recent years to enhance the material properties of bitumen, ultimately improving field performance and increasing the pavement service life. Polymer modification is considered one of the most suitable and by far the most popular approach. Elastomers, chemically functionalised thermoplastics and plastomers * (* Note: notwithstanding the fact that in Polymer Science the word ‘plastomer’ indicates a polymer with the simultaneous behaviour of an elastomer and plastics (thermoplastics), this paper uses the term ‘plastomer’ to indicate a thermoplastic polymer as it is more commonly found in Civil and Pavement Engineering.) are the most commonly used polymers for bitumen modification. Plastomers provide several advantages and are commonly acknowledged to improve high-temperature stiffness, although some of them are more prone to phase separation and consequent storage instability. Nowadays, due to the recent push for recycling, many road authorities are looking at the use of recycled plastics in roads. Hence, some of the available plastomers—in pellet, flakes, or powder form—are coming from materials recycling facilities rather than chemical companies. This review article describes the details of using plastomers as bitumen modifiers—with a specific focus on recycled plastics—and how these can potentially be used to enhance bitumen performance and the road durability. Chemical modifiers for improving the compatibility between plastomers and bitumen are also addressed in this review. Plastomers, either individual or in combination of two or three polymers, are found to offer great stiffness at high temperature. Different polymers including HDPE, LDPE, LLDPE, MDPE, PP, PS, PET, EMA, and EVA have been successfully employed for bitumen modification. However, each of them has its own merit and demerit as thoroughly discussed in the paper. The recent push in using recycled materials in roads has brought new light to the use of virgin and recycled plastomers for bitumen modification as a low-cost and somehow environmental beneficial solution for roads and pavements.

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Section: Virgin and Waste (Recycled) Plastomers To Improve Bitumen Performancementioning

confidence: 99%

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

2021

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“…Fourier Transform Infrared (FTIR) analysis was conducted to identify chemical bonds and functional groups in the asphalt binders, both unmodified and modified with PET. Characteristic peaks of the asphalt binder at 2919, 2850, 1459, and 1375 cm −1 were identified [ 57 ]. The introduction of PET additives was evident through strong stretching vibration bands at 1031 cm −1 , representing the ester group bond C–O observed in both PET particles and modified asphalt binders [ 57 ] ( Figure 3 F,G).…”

Section: Resultsmentioning

confidence: 99%

“…Characteristic peaks of the asphalt binder at 2919, 2850, 1459, and 1375 cm −1 were identified [ 57 ]. The introduction of PET additives was evident through strong stretching vibration bands at 1031 cm −1 , representing the ester group bond C–O observed in both PET particles and modified asphalt binders [ 57 ] ( Figure 3 F,G). Specifically, the characteristic peak of PET at 1730 cm −1 was present in the modified binders ( Figure 3 F,G).…”

Section: Resultsmentioning

confidence: 99%

A Multi-Streamline Approach for Upcycling PET into a Biodiesel and Asphalt Modifier

Chen,

Mraiza,

et al. 2024

Polymers

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The non-degradable nature of petroleum-based plastics and the dependence on petroleum-based products in daily life and production are dilemmas of human development today. We hereby developed a plastic waste upcycling process to address these challenges. A multi-stream fraction strategy was developed to process poly (ethylene terephthalate) (PET) plastics into soluble and insoluble fractions. The soluble fraction was used as a sole carbon source for microbial fermentation to produce biodiesel precursor lipids with an appreciable bioconversion yield. The insoluble fraction containing fractionated polymers was used as the asphalt binder modifiers. The downsized PET additive improved the high-temperature performance of the asphalt binder by 1 performance grade (PG) without decreasing the low-temperature PG. Subsequent SEM imaging unveiled alterations in the micromorphology induced by PET incorporation. Further FTIR and 1H NMR analysis highlighted the aromatic groups of PET polymers as a crucial factor influencing performance enhancement. The results demonstrated the multi-stream fraction as a promising approach for repurposing plastic waste to produce biodiesel and modify asphalt. This approach holds the potential to tackle challenges in fuel supply and enhance infrastructure resilience to global warming.

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“…Ashoor et al presented that rPET was added to asphalt by a percentage of (5–15%) to improve its properties of mechanical and rheological properties [ 236 ]. Sposito et al reported incorporating rPET wastes in rendering mortars based on Portland cement/hydrated lime [ 237 ].…”

Section: Reactor Of Recycling Pet and Application Of Rpetmentioning

confidence: 99%

Strategic Possibility Routes of Recycled PET

2021

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The polyethylene terephthalate (PET) application has many challenges and potential due to its sustainability. The conventional PET degradation was developed for several technologies to get higher yield products of ethylene glycol, bis(2-hydroxyethyl terephthalate) and terephthalic acid. The chemical recycling of PET is reviewed, such as pyrolysis, hydrolysis, methanolysis, glycolysis, ionic-liquid, phase-transfer catalysis and combination of glycolysis–hydrolysis, glycolysis–methanolysis and methanolysis–hydrolysis. Furthermore, the reaction kinetics and reaction conditions were investigated both theoretically and experimentally. The recycling of PET is to solve environmental problems and find another source of raw material for petrochemical products and energy.

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Improved asphalt binder using recycle polyethylene terephthalate polymer

Cited by 8 publications

References 17 publications

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

A Multi-Streamline Approach for Upcycling PET into a Biodiesel and Asphalt Modifier

Strategic Possibility Routes of Recycled PET

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