A Comparative Study of Bituminous Mixtures with Recycled Polyethylene Added by Dry and Wet Processes

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

doi:10.1007/978-94-017-7342-3_47

Cited by 10 publications

(2 citation statements)

References 8 publications

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“…The size and shape of the PETs can also influence the mechanical and volumetric properties of the final asphalt mixture [37]. Several studies have shown that the addition of recycled plastics via the dry process makes the asphalt mixture stiffer, with increased resistance to rutting [38][39][40][41], but the effects on fracture resistance and on the rate of damage accumulation at the typical intermediate temperatures at which fatigue phenomena start and evolve have not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Mixed Design Optimization of Polymer-Modified Asphalt Mixtures (PMAs) Containing Carton Plastic Packaging Wastes

Monticelli,

Roberto,

Romeo

et al. 2023

Sustainability

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This study investigated the potential of reusing plastics derived from multilayered food carton recycling processes as a modifier for asphalt mixtures by dry process. Two types of plastics, one untreated and one pelletized, were added to a mixture containing neat asphalt binder using three different dry methods and in two different amounts (2 and 5% by weight of aggregates). The chemical and physical properties of the plastics were explored via differential scanning calorimetry (DSC) and laser diffraction granulometry. The fracture behavior of the polymer-modified asphalt (PMA) mixtures was evaluated via superpave indirect tensile (IDT) testing at 10 °C and comparative analysis with the reference and a mixture composed of the same aggregate curve and a traditional styrene–butadiene–styrene (SBS)-modified asphalt binder. The role of the plastic during crack initiation and propagation was investigated via microscopic analysis. The results show that plastics derived from carton recycling processes can be successfully used as an additive in asphalt mixtures via the dry method due to the compatibility between their melting and mixing temperatures. The shape of the plastics influences the cracking propagation and resistance of the mixture. Finally, the presence of plastics in the mixture reduces the proneness to accumulate deformation (about 50% less than the reference ones) and increases the failure resistance, leading to a better cracking response at intermediate temperatures.

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Section: Introductionmentioning

confidence: 99%

Mixed Design Optimization of Polymer-Modified Asphalt Mixtures (PMAs) Containing Carton Plastic Packaging Wastes

Monticelli,

Roberto,

Romeo

et al. 2023

Sustainability

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“…For these reasons, improved asphalt mixtures and tools to properly select them are essential. A way to improve the performance of mixture is adding different materials [9][10][11], for example different kinds of fibres [12][13][14][15][16]. The most commonly fibres employed in asphalt mixture are the cellulose fibres in stone mastic asphalt (SMA) and porous asphalts to attain a higher asphalt content without it draining down during the mixing and placement process [17,18].…”

Section: Introductionmentioning

confidence: 99%

Fatigue behaviour of macrofiber reinforced gap graded asphalt mixtures

et al. 2020

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The addition of fibres to reinforce asphalt mixtures is a prospective field for pavement engineering, where the use of glass or synthetic macrofibers could potentially help not only as reinforcement for new asphalt mixtures, but also as part of asphalt overlays applied on deteriorated pavements to diminish reflective cracking during maintenance operations.In recent studies, it has been found that the addition of macrofibres can improve the rutting and fracture resistance of asphalt mixtures. However, the response of these mixtures to fatigue has not been studied yet. In this study, a complete performance characterization of a gap graded asphalt mixture with the addition of glass and synthetic macrofibres was studied. Also, a reference asphalt mixture without macrofibres was provided for comparison. Results showed that the addition of macrofibres improves water sensibility, rutting performance and stiffness of the gap grade asphalt mixtures studied. Also, it was observed during the fatigue tests that the incorporation of both types of macrofibres greatly improved the durability of the mixtures to fatigue cracking at medium range temperatures. This improved fatigue behaviour correlates to an extended useful life for the fibre reinforced asphalt mixtures. The synthetic macrofibres showed better fatigue behaviour at lower temperatures, while glass macrofibres gave a better response at the higher temperature studied.

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Gap Graded Asphalt Mixture with Macrofibres to Enhance Its Behaviour

Morea

2021

Int. J. Pavement Res. Technol.

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A Comparative Study of Bituminous Mixtures with Recycled Polyethylene Added by Dry and Wet Processes

Cited by 10 publications

References 8 publications

Mixed Design Optimization of Polymer-Modified Asphalt Mixtures (PMAs) Containing Carton Plastic Packaging Wastes

Mixed Design Optimization of Polymer-Modified Asphalt Mixtures (PMAs) Containing Carton Plastic Packaging Wastes

Fatigue behaviour of macrofiber reinforced gap graded asphalt mixtures

Gap Graded Asphalt Mixture with Macrofibres to Enhance Its Behaviour

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