Development of photocatalytic asphalt mixtures by the deposition and volumetric incorporation of TiO2 nanoparticles

Abstract

The field of construction and building industry was identified as an important market for the use of photocatalytic products since they can be applied to reduce building facades maintenance costs and also the pollution effects, particularly important in metropolis with high population density. The multifunctional capability of these materials will be promoted by the photocatalytic oxidation of pollutant agents. In this research work it was studied and developed a process to produce road pavements formulations with tailored properties that will and promote photocatalytic and self-cleaning effects. This can empower the production of non-slipping surfaces important to avoid accidents that occurs due to the combination of the first autumn rains and adsorbed oils and other organic compounds onto the pavement’s surfaces. To integrate the semiconductor material, two application methods were used: a water-based TiO2 nanoparticles solution, applied by spraying, and using TiO2 nanoparticles by volume incorporation to the base asphalt mixture.