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Air-Purifying Concrete Is Not Green In Color

The Dutch town of Hengelo is putting certain concrete paving stones to the test. These said stones contain a titanium dioxide-based additive that, when under the influence of sunlight, bind the nitrogen oxide particles emitted by car exhausts and turns them into harmless nitrates. They plan on measuring the air quality after paving one half of a road with the air-purifying concrete and the other half with the ordinary variety. Air purification isn’t all this new concrete is capable of,... Continue reading