Self-healing concrete is a type of concrete that incorporates dormant microorganisms capable of sealing its own cracks autonomously, thus extending the structure's lifespan and reducing maintenance requirements.
Traditional concrete structures require frequent maintenance due to cracking and degradation over time, leading to increased costs and environmental impact.
Dormant bacteria are mixed with concrete along with a nutrient source. When water seeps into cracks, it activates the bacteria which then produce calcite (limestone) to fill the crack from within, effectively sealing it without human intervention.
Self-healing concrete is manufactured by embedding dormant bacteria and a nutrient source into standard concrete mixtures. The mixture must be carefully controlled during the curing process to ensure the bacteria remain viable until needed.
The construction process involves mixing the self-healing concrete with water, pouring it into molds, and allowing it to cure under controlled conditions. Once cured, the structure can withstand cracking without immediate intervention from maintenance crews.
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