Concrete and cement have had a less than stellar reputation when it comes to sustainable building materials, but they should be seen as valuable resources because they are durable and can reduce energy and water waste when used wisely, writes Leon Kaye. "Smart use, reuse, and design, can burnish concrete's reputation as a sustainable, not polluting, material," he notes, adding that Kevin Mlutkowski, the American Concrete Institute's sustainability director, says that "enhanced durability will be the key for the concrete industry to meet increased building demands without compromising the environment."

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