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Have you ever been driving down a pothole filled street, thinking, "I wish the city, someone, anyone would fix the roads!" Soon, roads and streets may be able to fix themselves.
你曾經開車走過滿是坑洼是街道，并想著“我希望這個城市的有些人會修理這條路！”也許很快，路和街道就能自行進行修理了。
Researchers at the University of Michigan have developed a type of concrete that heals itself when it cracks. Regular concrete is like ceramic when it breaks. It really breaks, opening a wide chasm that requires serious mending.
如今，密歇根大學的研究人員研發出了一種破裂后可以自行修復的混凝土。普通的混凝土被打碎時就像陶瓷一樣。破裂嚴重時會撕開一個大口，需要認真修補。
Self healing concrete behaves more like metal.It bends without breaking thanks to special fibers holding it together. Bending or stressing the new concrete creates hairline fractures instead of gaping holes. All it takes to mend the tiny fissures is exposure to water and carbon dioxide. Chemicals in the concrete mix with water and carbon dioxide to form a healing scar.
自我治愈的混凝土表現得更像金屬。因為有一種特殊的纖維支撐所以將這種混凝土彎曲之后仍然不會破裂。彎曲或者擠壓這種新型的混凝土會產生發絲那么細的裂縫而不是漏洞。要修復細小的裂紋只需讓其接觸到水和二氧化碳。然后混凝土結合水和二氧化碳就會發生化學反應，填充裂痕。
In the lab, the concrete was able to heal itself back to nearly full strength after a slab was stretched to three times its normal size. Self healing concrete could help cut costs for rebuilding not only new roads but also bridges and other structures that use the material.
在實驗中，混凝土板被拉伸至原尺寸的三倍時，混凝土就能夠完全恢復。自愈混凝土能夠幫助消減重建的成本，不論是新修的道路還是橋梁以及其它使用混凝土的結構。
You won't find self healing concrete on roads just yet. The researchers are working on bringing it to market in the next few years. And when it's ready for widespread use, self healing concrete could make potholes a thing of the past.
不過，你還不能在街上找到自愈混凝土。接下來幾年，研究人員將致力于將這種混凝土推向市場。一旦被廣泛應用，自愈混凝土會讓凹坑變成歷史。
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