Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Photocatalytic asphalt mixtures: semiconductors' impact in skid resistance and texture
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. ; This work was partially financed by FCT (Fundacao para a Ciencia e a Tecnologia) under the project [PTDC/FIS/120412/2010]: "Nanobased concepts for Innovative & Eco-sustainable constructive material's surfaces" and project [PEst-OE/ECI/UI4047/2014]. Also, the first author would like to acknowledge FCT for the PhD scholarship [SFRH/BD/137421/2018].
Photocatalytic asphalt mixtures: semiconductors' impact in skid resistance and texture
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. ; This work was partially financed by FCT (Fundacao para a Ciencia e a Tecnologia) under the project [PTDC/FIS/120412/2010]: "Nanobased concepts for Innovative & Eco-sustainable constructive material's surfaces" and project [PEst-OE/ECI/UI4047/2014]. Also, the first author would like to acknowledge FCT for the PhD scholarship [SFRH/BD/137421/2018].
Photocatalytic asphalt mixtures: semiconductors' impact in skid resistance and texture
Rocha Segundo, I. (Autor:in) / Landi, S., Jr. (Autor:in) / Oliveira, S. (Autor:in) / Freitas, E. F. (Autor:in) / Costa, Manuel F. M. (Autor:in) / Carneiro, Joaquim A. O. (Autor:in)
01.01.2019
doi:10.1080/14680629.2019.1624398
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
621
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