• Rinku

Fly ash enriched with bacteria is mixed in concrete that improves the durability, compressive strength, workability, mechanical properties. Durability of concrete may be defined as the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties. The bacteria to be used as self-healing agent in concrete should be suitable for that purpose i.e. they should be able to perform long-term effective crack sealing, preferably during the total construction life time .the principle mechanism of bacterial crack healing is the bacteria themselves act largely as a catalyst, and transform a precursor compound to a suitable filler material. The newly produced compound such as calcium carbonate-based mineral precipitates should than act as a type of bio cement what effectively seals newly formed cracks. Fly ash is a coal combustion product composed of fine particles that are driven out of the boiler with the flue gases. Ash that falls in the bottom of the boiler is called bottom ash. In modern coal-fired power plants, fly ash is generally captured by electrostatic precipitators or other particle filtration equipment before the flue gases reach the chimneys. Together with bottom ash removed from the bottom of the boiler, it is known as coal ash. Bacteria are used for the reduction of cracks in concrete. As bacterial concrete is called as self-healing concrete, thus the cement is replaced by the fly ash enriched with bacteria.

Fly ash, Concrete, Cement, Construction & Bacteria etc.

"APPLICATION OF FLY ASH CONCRETE MIX AS A COSTRUCTION MATERIAL -PERSPECTIVE AND CHALLENGES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 2, page no.1248-1256, February-2020, Available :http://www.jetir.org/papers/JETIR2002393.pdf

"APPLICATION OF FLY ASH CONCRETE MIX AS A COSTRUCTION MATERIAL -PERSPECTIVE AND CHALLENGES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 2, page no. pp1248-1256, February-2020, Available at : http://www.jetir.org/papers/JETIR2002393.pdf