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Article

Asphalt Binder “Skincare”? Aging Evaluation of an Asphalt Binder Modified by Nano-TiO2

1
Department of Civil Engineering, Institute for Sustainability and Innovation in Structural Engineering (ISISE), University of Minho, 4800-058 Guimarães, Portugal
2
Centre of Physics of Minho and Porto Universities (CF-UM-UP), Azurém Campus, University of Minho, 4800-058 Guimarães, Portugal
3
Federal Institute Goiano, Rio Verde 75901-970, Brazil
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Digital Transformation CoLab (DTx), Building 1, Campus of Azurém, University of Minho, 4800-058 Guimarães, Portugal
5
Departamento de Engenharia de Transportes, Universidade Federal do Ceará, Fortaleza 60455-760, Brazil
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Minas M. Stylianakis
Nanomaterials 2022, 12(10), 1678; https://doi.org/10.3390/nano12101678
Received: 1 March 2022 / Revised: 5 May 2022 / Accepted: 11 May 2022 / Published: 14 May 2022
(This article belongs to the Section Environmental Nanoscience and Nanotechnology)
Aging by oxidation of asphalt roadway material promotes changes in its physical, chemical, and rheological properties, affecting its hardening and accelerating the degradation of its corresponding asphalt mixture. Titanium dioxide (TiO2) has been applied in engineering investigations to promote anti-aging and photocatalytic properties. In this study, a commercial binder was modified with nano-TiO2 (using contents of 0.1, 0.25, 0.5, 1, 2, 3, and 6%). It was evaluated by physicochemical and rheological tests (penetration, softening point, mass loss, dynamic viscosity, rheology, and Fourier transform infrared spectroscopy—FTIR) before and after aging by rolling thin-film oven test (RTFOT) and pressure aging vessel (PAV). The results indicated that incorporating nano-TiO2 mitigates binder aging, pointing out 0.25% as an optimum modification content for the investigated asphalt binder. View Full-Text
Keywords: anti-aging; asphalt binders; nano-TiO2; nanomodification; semiconductor nanoparticles; FTIR anti-aging; asphalt binders; nano-TiO2; nanomodification; semiconductor nanoparticles; FTIR
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MDPI and ACS Style

Lima, O., Jr.; Afonso, C.; Rocha Segundo, I.; Landi, S., Jr.; Homem, N.C.; Freitas, E.; Alcantara, A.; Branco, V.C.; Soares, S.; Soares, J.; Teixeira, V.; Carneiro, J. Asphalt Binder “Skincare”? Aging Evaluation of an Asphalt Binder Modified by Nano-TiO2. Nanomaterials 2022, 12, 1678. https://doi.org/10.3390/nano12101678

AMA Style

Lima O Jr., Afonso C, Rocha Segundo I, Landi S Jr., Homem NC, Freitas E, Alcantara A, Branco VC, Soares S, Soares J, Teixeira V, Carneiro J. Asphalt Binder “Skincare”? Aging Evaluation of an Asphalt Binder Modified by Nano-TiO2. Nanomaterials. 2022; 12(10):1678. https://doi.org/10.3390/nano12101678

Chicago/Turabian Style

Lima, Orlando, Jr., Cátia Afonso, Iran Rocha Segundo, Salmon Landi Jr., Natália C. Homem, Elisabete Freitas, Amanda Alcantara, Verônica C. Branco, Sandra Soares, Jorge Soares, Vasco Teixeira, and Joaquim Carneiro. 2022. "Asphalt Binder “Skincare”? Aging Evaluation of an Asphalt Binder Modified by Nano-TiO2" Nanomaterials 12, no. 10: 1678. https://doi.org/10.3390/nano12101678

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