BLUEBLOCKS: AIR-PURIFYING AND SELF-CLEANING THANKS TO AIRCAT TI50

Nieuws
28-05-2018

BLUEBLOCKS: AIR-PURIFYING AND SELF-CLEANING THANKS TO AIRCAT TI50

Carmans Blueblocks are probably the most ecological precast concrete blocks on the market, thanks to their high content of recycled raw material and maximum use of renewable energy. This low ecological footprint can now be reduced even further thanks to a final treatment with Aircat, an innovative invisible coating that gives the Blueblocks air-purifying and self-cleaning properties under the influence of sunlight.

Photocatalysis: air purification by sunlight

Aircat, a development of the Belgian company Novatio, is a waterborne coating based on photocatalytic minerals. This invisible nanocoating captures UV light and converts that energy into active oxygen molecules. These are highly reactive free radicals that in turn break down other pollutants, such as nitrogen oxides (NOX), soot particles and ozone (O3). Aircat is particularly active on volatile organic compounds (VOCs). These are organic molecules that are derived from combustion gases or solvents, among other things. All these complex and toxic substances are broken down into harmless simple substances such as water (H2O), CO2 and water-soluble salts.
 

Self-cleaning walls

A Blueblock treated with Aircat is not only air-purifying, but the surface is also self-cleaning. Photocatalytic action also breaks down surface contamination, allowing it to be rinsed away. This means that the walls are much less susceptible to such things as green algae and black soot deposits. This means the surface keeps its ‘new’ look for longer.
 

Concrete trees

The air-purifying effect of air-cleaning Blueblocks is relatively large, although it must be said in all honesty that it is difficult to quantify. There are many factors that play a role: incidence and intensity of light, availability of (air) humidity, wind, temperature, concentration of pollution, etc. The effect will be up to 1,000 times stronger on a sunny afternoon in June than on a dark December morning. But it is strongest when we need it most: on hot, humid summer days with a lot of smog and ozone pollution.

A renowned study commissioned by the Californian Ministry of the Environment indicates that 100 m² of treated area purifies approximately 10,000 m³ of air from NOX and VOCs on an average sunny day. That is enough clean air for about 600 people !

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