Which self-healing material innovation was specifically developed for architectural concrete and can repair micro-cracks using bacteria embedded in the material?

Building materials have evolved dramatically over centuries, but recent innovations are truly revolutionizing how architects approach durability and sustainability. Self-healing materials represent one of the most fascinating frontiers in architectural product design, potentially reducing maintenance costs and extending building lifespans. Test your knowledge about this cutting-edge innovation that's changing how architects think about material specification and building longevity.

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Bioconcrete (or bacterial concrete)
Shape-memory polymers
Vitrimers
Self-stratifying coatings