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Reduced pot holes on roads presaged by a self-healing protective coating for concrete [Registered]

Scientists are reporting development of what they describe as the first self-healing protective coating for cracks in concrete, the world’s most widely used building material. Their study on the material – which is inexpensive and environmentally friendly – appears in the journal ACS Applied Materials & Interfaces. Chan-Moon Chung and colleagues explain that protecting concrete roads, bridges and other structures from developing tiny cracks has been a major technological challenge. Cracks allow water, salt used for deicing and air to enter the concrete. During winter weather, water in the cracks freezes, expands and the cracks get bigger, with road salt…

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