Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt
@conference {2849, title = {Photocatalytic Asphalt Mixtures: Semiconductors{\textquoteright} Impact in Skid Resistance and Microtexture}, journal = {International Society for Asphalt Pavements (ISAP)}, year = {2018}, month = {2018-06-20 00:00:00}, address = {Fortaleza, Brazil}, abstract = {Photocatalytic and self-cleaning asphalt mixtures have the capacity of mitigating air quality problems and degrade oils/greases. Their functional characteristics can change due to the presence of semiconductors. Thus, after the application of semiconductors on asphalt mixtures, the assessment of skid resistance and microtexture becomes important since they are essential to assure safety. Photocatalytic and self-cleaning were provided to two types of mixtures by spraying and bulk incorporation. Pendulum Tests were carried out in AC 14 and AC 6 at 5 temperature levels in dry and wet conditions. Their microtexture was evaluated by optical non-contact rugometric characterization. The results show that, in dry condition, the skid resistance of functionalized asphalt mixtures was similar to the mixes without treatment. In wet condition, the functionalization caused a maximum decrease of 7\% in skid resistance. The semiconductors influenced only the skewness of AC 14 with 6\% TiO2 when bulk incorporated. All the other amplitude parameters were not affected by the functionalization. Futhermore, the application of the semiconductors can be used without high impacts in microtexture and therefore in friction.
}, keywords = {microtexture, Optical Non-Contact Rugometric Characterization., Photocatalytic Asphalt Mixtures, Skid Resistance}, url = {http://isap2018.com.br/}, author = {Rocha Segundo, I. and Freitas, E.F. and Carneiro, J. A. O. and Oliveira, S. M. B. and Costa, M. F. M. and Landi Jr., S.} }
The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.
Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more
Centro de Território, Ambiente e Construção
Escola de Engenharia da Universidade do Minho
Campus de Azurém
4800-058 Guimarães, Portugal
Phone: + 351 253 510 200 (517 206)
Fax: + 351 253 510 217
Email: geral@ctac.uminho.pt