Fly Ash Based Bacterial Concrete
Performance and Crack Healing Efficiency Evaluation
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Concrete which repairs itself by biologically producing limestone to heal cracks that appear on the surface of concrete structures. It is also called bio-concrete. Whenever the concrete is damaged and water starts entering the cracks that appear in the concrete, the spores of the bacteria fertilize after coming in contact with water and nutrients will get activated. The bacteria start to feed the calcium lactate. As the bacteria consume oxygen, the soluble calcium lactate is converted to insoluble limestone. The limestone solidifies on the cracked surface, thereby sealing it up. The overall ai...
Concrete which repairs itself by biologically producing limestone to heal cracks that appear on the surface of concrete structures. It is also called bio-concrete. Whenever the concrete is damaged and water starts entering the cracks that appear in the concrete, the spores of the bacteria fertilize after coming in contact with water and nutrients will get activated. The bacteria start to feed the calcium lactate. As the bacteria consume oxygen, the soluble calcium lactate is converted to insoluble limestone. The limestone solidifies on the cracked surface, thereby sealing it up. The overall aim of this research was to quantitatively understand and assess the role of microbiologically induced calcium carbonate precipitation in enhancing the mechanical and durability characteristics of concrete incorporated with Sporosarcina pasteurii and evaluate its crack healing efficiency. Bacteriogenic calcite mineral precipitation using Sporosarcina pasteurii mechanism can be used effectivelyin improving the strength and durability properties can be attributed to the activity of Sporosarcina pasteurii in development of dense and refined microstructure of bacteria incorporated concrete.
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