The details behind Chan-Moon Chung's self-healing concrete

03/5/2013 | Economist (tiered subscription model), The

Chan-Moon Chung of Yonsei University in South Korea used a chemical approach to create self-healing concrete. He mixed methacryloxypropyl-terminated polydimethylsiloxane and benzoin isobutyl ether into small capsules made of urea and formaldehyde to keep the chemical mixture safe from sunlight and mixed them into the concrete. This article details how the capsules rupture and how their contents heals the cracks, providing resistance to water.

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Economist (tiered subscription model), The

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