Green pavements: reuse of plastic waste in asphalt mixtures

Angelone, Silvia; Casaux, Marina Cauhape; Borghi, Manuel; Martinez, Fernando

doi:10.1617/s11527-015-0602-x

Cited by 75 publications

(34 citation statements)

References 6 publications

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“…The values of the creep strain slope indicated that PMIX-E had higher mixture stiffness compared with the control and PMIX-C mixtures. The result of the dynamic creep test was in good agreement with the MR and TSR test values (Angelone et al, 2016).…”

Section: Dynamic Creepsupporting

confidence: 72%

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: Dynamic Creepsupporting

confidence: 72%

Enhanced Dry Process Method for Modified Asphalt Containing Plastic Waste

et al. 2021

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“…Incorporating plastic up to 25% resulted in enhanced HMA performance in terms of stability, skidding, deformation resistance, fatigue, and no defects observed [27]. In Argentina, 2% of the flaked PE demonstrated an optimum performance of the mixtures [25]. 60/70 PEN examined in Nigeria with Polyethylene terephthalate from a plastic bottle and mixture properties tremendously improved [28].…”

Section: Plastic Wastesmentioning

confidence: 92%

“…HDPE with HMA posed improvement to deformation resistance, high stability, and a low flow value. An optimum HDPE rate was about 5% for higher acceptable performance and reduced cost of HMA [25]. HDPE revealed better properties of subgrade when added at 0.25% [26].…”

Section: Plastic Wastesmentioning

confidence: 99%

Mining Operations in Construction of Main Transport Routes

2020

Mining Industry

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Research objective: analysis of waste disposal issues in the mining and mineral processing industry of the Russian Federation. Research methodology: economic and environmental challenges concerned with mining and mineral processing waste in dumps and tailings were analysed. Results: an option is proposed to dispose of the waste rock generated by the mining and processing industry by using it for construction of railways and motor roads. This technology makes it possible to avoid construction of quarries and temporary settlements for their development along the road route, which will decrease the environmental impact and significantly reduce the time and cost of road construction. Conclusions: The proposed technology helps to achieve a significant economic effect (no costs for transporting materials from remote areas of the country), reduce the adverse environmental impact of mining operations and, in the long term, prevent dump formation.

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“…[46] A study with very high percentages (2, 4 and 6 wt% based on the mixture weight, which corresponds to 30, 45 and 60 wt% on a binder basis) using both an HDPE/LDPE mix as well as just PP showed 10-20% drops in ITS except for two data sets. [47] A study with 2 wt% waste polyethylene showed a 50% increase in ITS while only a 20% increase was found for 6 wt% virgin LDPE. [48] Figure 4 shows the type of behavior that is common; an increase of ITS and TSR at low added fractions followed by a decrease above some fraction.…”

Section: Itstsrmentioning

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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Green pavements: reuse of plastic waste in asphalt mixtures

Cited by 75 publications

References 6 publications

Enhanced Dry Process Method for Modified Asphalt Containing Plastic Waste

Enhanced Dry Process Method for Modified Asphalt Containing Plastic Waste

Mining Operations in Construction of Main Transport Routes

Waste plastics in asphalt concrete: A review

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