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Open AccessArticle
The Use of Waste Low-Density Polyethylene for the Modification of Asphalt Mixture
by
Róbert Kovács
Róbert Kovács 1,
Adriana Czímerová
Adriana Czímerová 2,*,
Adrián Fonód
Adrián Fonód 2 and
Ján Mandula
Ján Mandula 1
1
Faculty of Civil Engineering, Technical University of Košice, Vysokoškolská 4, 042 00 Košice, Slovakia
2
VUIS-CESTY, Ltd., Vlčie hrdlo 1, 821 07 Bratislava, Slovakia
*
Author to whom correspondence should be addressed.
Buildings 2024, 14(10), 3109; https://doi.org/10.3390/buildings14103109 (registering DOI)
Submission received: 21 August 2024
/
Revised: 13 September 2024
/
Accepted: 25 September 2024
/
Published: 27 September 2024
Abstract
In this study, a critical evaluation and the benefits of using a waste and a virgin polymer in an asphalt mixture are presented. The present paper is the result of a three-year research effort to find a suitable recyclate compatible with asphalt binder and setting reaction conditions in the preparation of asphalt mixtures with the mentioned recyclate. This suitable candidate was recycled low-density polyethylene (LDPE), which was produced by recycling old, worn-out bags and films. An amount of 6% of LDPE by the weight of the binder content was suggested as the best amount of the modifier. Physical tests, including penetration, softening point, and kinematic viscosity have been carried out to prove the effectiveness of the modification on the binder properties. The effectiveness of the blending process and the appropriate concentration of additives led to a homogeneous polymer-modified bitumen without any imperfections in the structure. After successful preparation under laboratory conditions, this paper describes the preparation of asphalt mixtures directly in an asphalt-mixing plant and the subsequent implementation of a verification section. The overall composition of prepared polymer-modified asphalt mixtures has been studied. An important result of this study is the preparation of the asphalt mixture with waste LDPE that meets all the technical requirements. Moreover, it has been proven that this type of waste PE is fully applicable in asphalt-mixing plants in Slovakia, with zero or minimal financial burden on construction companies to complete the construction of their production facilities. Using such a technology, we can reduce the amount of waste plastics that otherwise end up in landfill.
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MDPI and ACS Style
Kovács, R.; Czímerová, A.; Fonód, A.; Mandula, J.
The Use of Waste Low-Density Polyethylene for the Modification of Asphalt Mixture. Buildings 2024, 14, 3109.
https://doi.org/10.3390/buildings14103109
AMA Style
Kovács R, Czímerová A, Fonód A, Mandula J.
The Use of Waste Low-Density Polyethylene for the Modification of Asphalt Mixture. Buildings. 2024; 14(10):3109.
https://doi.org/10.3390/buildings14103109
Chicago/Turabian Style
Kovács, Róbert, Adriana Czímerová, Adrián Fonód, and Ján Mandula.
2024. "The Use of Waste Low-Density Polyethylene for the Modification of Asphalt Mixture" Buildings 14, no. 10: 3109.
https://doi.org/10.3390/buildings14103109
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