Behaviour of Self Cleaning Concrete using Photocatalytic Material

Air pollution is a significant risk factor for a number of pollution related disease and health conditions. Self-cleaning concrete having a technique to reduce the air contaminants such as NOX, SO2, CO2 and VOC’S from vehicular traffic on streets, any industrial activity and the urban environment. Photocatalytic materials are used in conventional concrete for urban buildings and road pavements to reduce air pollution. The primary photocatalytic material is Titanium dioxide (TiO2), a white coloured powder. TiO2 is activated by the energy from the sun light or UV lamps and it decompose the external pollutants on the surface of the concrete, which is removed by wind and rain action. The presence or removals of pollutants are monitored by the laboratory tests. The workability, compressive strength and durability of the self-cleaning concrete is also tested. As a result it reduces the air pollution (also smog) and causes to self-cleaning activity.