New concrete could add years to bridge life

06/6/2011 | GreenBiz.com

Researchers at Canada's NRC Institute for Research in Construction have developed concrete they say can diminish shrinkage, reduce cracking, and double the lifespans of bridges and roads. The key difference in this concrete is the use of "lightweight porous shale fine aggregate," which retains more water than the traditional mix and allows the concrete to heal itself.

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