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Concrete Nation
Bright future for ancient material

"(...)There are many simple ways to modify the properties of concrete. Tweaking the ratio of the ingredients can change the material's strength or roughness, for instance. Modern concrete also contains chemical additives that affect the material's physical properties, such as the fluidity or the time it takes to harden.

Scientists and architects have been pushing the limits of this humdrum material to give it new features and creative functions. "Liquid Stone," a current exhibit at the National Building Museum in Washington, D.C., portrays the future of concrete. The show includes ultrahigh-performance concrete that bends like metal and another type of concrete that forms translucent blocks. (...)"

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