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Catalytic Concrete that Purifies the Air
Jul 28A new concrete containing a catalyst that breaks down nitrogen oxide from tailpipe emissions has been developed.
Dutch researchers at the Eindhoven University of Technology have created what they call an air-purifying concrete. The material contains titanium dioxide, which in the presence of sunlight acts photo-catalytically to convert nitrogen oxide to environmentally benign nitrate.
Tests were carried out by resurfacing part of a busy highway with more than 1000 square meters (about 10,000 square feet) of the material. Air-purity measurements found the NOx content was 25-percent to 45-percent lower in areas using the new concrete stones.
The cost of the material is claimed to raise road-building costs by only 10-percent.
Imaging how green this concrete would be if the Pavegen concept were added to it?
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