A new type of concrete capable of repairing its own cracks has the potential to significantly lower the cost of maintaining a structure, experts say. Instead of fracturing as it ages, the concrete creates hairline cracks that heal with the help of light rain. The material now costs three times as much as traditional concrete, but experts say the higher expense is recovered because less maintenance is required. They also say the bendable concrete eliminates the need to install devices to counter seismic activity.

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