空氣淨化混凝土

空氣淨化混凝土

荷蘭的Hengelo打算用一種十分特殊的方法淨化空氣-空氣淨化混凝土，這種混凝土由特文特大學(University of Twente)所開發，利用含有二氧化鈦的添加物在陽光下，能結合氧化氮並轉化成無害的硝酸鹽的特性，吸收汽車排放的廢氣，而被排放出來的硝酸鹽，則能被大雨沖刷帶走。

Hengelo已經在某條興建中的道路上進行測試，一半舖上這種「綠色地磚」(如上圖)，一半則維持傳統地磚，並於明年年初開始進行空氣品質檢測，好決定是否全面採用這種綠色混凝土。

引用來源 © http://engchinesedev.weblogsinc.com/tag/green+technology/

The Dutch town of Hengelo looks to be taking a rather unique approach to cleaning the air, with it now testing out a new type of "air-purifying concrete" developed by the University of Twente that promises to soak up the nitrogen oxide particles emitted by car exhausts. That's done with the aid of a titanium dioxide-based additive which, with the help of some sunlight, binds with the nitrogen oxide particles and turns them into harmless nitrates, which can apparently just wash away with the next rain shower.

The town isn't fully sold on the idea just yet, however, with it only paving half of a road now under construction with the so-called "green bricks" (pictured above), while the other half is getting paved with plain old concrete. They'll then take some air measurements from each section early next year and decide whether to continue paving the town green or not.

http://www.switched.com/2008/08/07/dutch-town-using-air-purifying-concrete-to-cut-down-on-pollution/