self healing concrete

What Mechanisms Enable Self-Healing?

Several mechanisms can be employed to achieve self-healing in concrete:
Autogenous Healing: Utilizes unhydrated cement particles that react with water to fill cracks.
Microbial Healing: Incorporates bacteria that precipitate calcium carbonate to seal cracks.
Chemical Healing: Uses embedded capsules containing healing agents that are released when cracks form.
Polymeric Healing: Involves polymers that expand and contract to fill cracks.

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