Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt Mixes
In recent years, nanotechnology has sparked an interest in nanomodification of bituminous materials to increase the viscosity of asphalt binders and improves the rutting and fatigue resistance of asphalt mixtures. This paper presents the experimental results of laboratory tests on bituminous mixture...
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| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/9/2434 |
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| author | Laura Moretti Nico Fabrizi Nicola Fiore Antonio D’Andrea |
| author_facet | Laura Moretti Nico Fabrizi Nicola Fiore Antonio D’Andrea |
| author_sort | Laura Moretti |
| collection | DOAJ |
| description | In recent years, nanotechnology has sparked an interest in nanomodification of bituminous materials to increase the viscosity of asphalt binders and improves the rutting and fatigue resistance of asphalt mixtures. This paper presents the experimental results of laboratory tests on bituminous mixtures laid on a 1052 m-long test section built in Rome, Italy. Four asphalt mixtures for wearing and binder layer were considered: two polymer modified asphalt concretes (the former modified with the additive Superplast and the latter modified with styrene–butadiene–styrene), a “hard” graphene nanoplatelets (GNPs) modified asphalt concrete and a not-modified mixture. The indirect tensile strength, water sensitivity, stiffness modulus, and fatigue resistance of the mixtures were tested and compared. A statistical analysis based on the results has shown that the mixtures with GNPs have higher mechanical performances than the others: GNP could significantly improve the tested mechanical performances; further studies will be carried out to investigate its effect on rutting and skid resistance. |
| first_indexed | 2024-03-10T11:38:06Z |
| format | Article |
| id | doaj.art-ffeaca679d4946dcb70a8ff65b2f3dfb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:38:06Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-ffeaca679d4946dcb70a8ff65b2f3dfb2023-11-21T18:43:29ZengMDPI AGMaterials1996-19442021-05-01149243410.3390/ma14092434Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt MixesLaura Moretti0Nico Fabrizi1Nicola Fiore2Antonio D’Andrea3Department of Civil, Constructional and Environmental Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Civil, Constructional and Environmental Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Civil, Constructional and Environmental Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyDepartment of Civil, Constructional and Environmental Engineering, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, ItalyIn recent years, nanotechnology has sparked an interest in nanomodification of bituminous materials to increase the viscosity of asphalt binders and improves the rutting and fatigue resistance of asphalt mixtures. This paper presents the experimental results of laboratory tests on bituminous mixtures laid on a 1052 m-long test section built in Rome, Italy. Four asphalt mixtures for wearing and binder layer were considered: two polymer modified asphalt concretes (the former modified with the additive Superplast and the latter modified with styrene–butadiene–styrene), a “hard” graphene nanoplatelets (GNPs) modified asphalt concrete and a not-modified mixture. The indirect tensile strength, water sensitivity, stiffness modulus, and fatigue resistance of the mixtures were tested and compared. A statistical analysis based on the results has shown that the mixtures with GNPs have higher mechanical performances than the others: GNP could significantly improve the tested mechanical performances; further studies will be carried out to investigate its effect on rutting and skid resistance.https://www.mdpi.com/1996-1944/14/9/2434modified asphaltfatigue resistancestiffness modulusgraphene nanoplateletsnanomodification |
| spellingShingle | Laura Moretti Nico Fabrizi Nicola Fiore Antonio D’Andrea Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt Mixes Materials modified asphalt fatigue resistance stiffness modulus graphene nanoplatelets nanomodification |
| title | Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt Mixes |
| title_full | Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt Mixes |
| title_fullStr | Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt Mixes |
| title_full_unstemmed | Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt Mixes |
| title_short | Mechanical Characteristics of Graphene Nanoplatelets-Modified Asphalt Mixes: A Comparison with Polymer- and Not-Modified Asphalt Mixes |
| title_sort | mechanical characteristics of graphene nanoplatelets modified asphalt mixes a comparison with polymer and not modified asphalt mixes |
| topic | modified asphalt fatigue resistance stiffness modulus graphene nanoplatelets nanomodification |
| url | https://www.mdpi.com/1996-1944/14/9/2434 |
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