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Self-healing concrete would not only make the material more sustainable, but it would also contribute to an increase in the service life of concrete structures and make the material more durable and environmentally friendly.
A living building material (LBM) is a material used in construction or industrial design that behaves in a way resembling a living organism.Examples include: self-mending biocement, [1] self-replicating concrete replacement, [2] and mycelium-based composites for construction and packaging.
However, this is not a sustainable resource for building materials because it can crack and degrade over time. [12] An alternative to concrete is bacterial concrete (self-healing concrete), which is a substance that mixes Bacillus pseudofirmus, Bacillus cohnii, and concrete. [12]
Calcium is a binding agent in Roman concrete, which makes it remarkably strong. Figuring out where it came from was the key to solving this architectural mystery.
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Self-healing concrete is a sustainable and ecologically friendly material that can mend its cracks autonomously, partially or totally, restoring the mechanical qualities of structural parts. This is due to concrete's poor condition, which commonly leads to surface fissures that impair its durability.
For concrete a high performance self-healing version is available, [38] [39] however options with lower yields of pollutive waste entertain ideas of upcycling and congregate supplementing; replacing traditional concrete mixes with slag, production waste, and aggregates. [40] Insulation also sees multiple angles for substitution.
MICP has been shown to prolong concrete service life due to calcium carbonate precipitation. The calcium carbonate heals the concrete by solidifying on the cracked concrete surface, mimicking the process by which bone fractures in human body are healed by osteoblast cells that mineralize to reform the bone. [ 36 ]