Photocatalytic concrete — a material laced with nano-sized particles of titanium dioxide — has been valued over the past decade for two being self-cleaning and "eating" smog particles by converting them to less harmful chemicals under the effect of direct sunlight. A recent trial application by the Ontario Ministry of Transportation (MTO) is designed to see just how effectively the material might perform alongside roads in the province’s climate.
Source: Daily Construction News and Commercial Record for February 23. Read more.
National Ready Mixed Concrete Association