Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/63018

TitlePhotocatalytic asphalt mixtures: semiconductors' impact in skid resistance and texture
Author(s)Rocha Segundo, I.
Landi, S., Jr.
Oliveira, S.
Freitas, E. F.
Costa, Manuel F. M.
Carneiro, Joaquim A. O.
Keywordsphotocatalytic asphalt mixtures
macrotexture
microtexture
skid resistance
optical non-contact rugometric characterisation
Issue date2019
PublisherTaylor & Francis Ltd
JournalRoad Materials and Pavement Design
CitationI. Rocha Segundo, S. Landi Jr., S. Oliveira, E. Freitas, M.F. Costa & J. Carneiro (2019) Photocatalytic asphalt mixtures: semiconductors’ impact in skid resistance and texture, Road Materials and Pavement Design, 20:sup2, S578-S589, DOI: 10.1080/14680629.2019.1624398
Abstract(s)Photocatalytic asphalt mixtures have the capability of mitigating air quality problems and degrade oils/greases by using semiconductors. The techniques to do so can change their functional characteristics. This study aimed to analyse the functionalization effect on the essential surface characteristics, such as macrotexture, skid resistance, and microtexture. AC 14 and AC 6 mixtures were functionalised with nano-TiO2 and micro-ZnO by spraying and bulk incorporation. Mean Profile Depth, British Pendulum and microtexture amplitude parameters were evaluated. TiO2 application seemed to smooth the surface slightly. In dry condition, the skid resistance of functionalised asphalt and control mixtures was similar. In wet condition, the functionalization caused a maximum decrease of 7% in skid resistance. The amplitude parameters were not affected by any functionalization technique except the skewness of AC 14 with 6% TiO2 by bulk incorporation. Furthermore, the application of the semiconductors can be used without high impacts in texture and skid resistance.
TypeArticle
URIhttp://hdl.handle.net/1822/63018
DOI10.1080/14680629.2019.1624398
ISSN1468-0629
Peer-Reviewedyes
AccessOpen access
Appears in Collections:FUNCTIONAL AND SMART MATERIALS AND SURFACES FOR ADVANCED APPLICATIONS (2018 - ...)
C-TAC - Artigos em Revistas Internacionais


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