BacillaFilla
BacillaFilla is a genetically engineered strain of the bacterium Bacillus subtilis which was developed by a group of students at Newcastle University in order to repair cracks in concrete.[1][2]
History
The bacterial strain was engineered by a team of students from Newcastle University in 2010 as part of an International Genetically Engineered Machine competition.[2]
Description
The bacteria would be released as spores which would germinate upon coming into contact with the pH of concrete.[1] Upon germination, the bacteria would descend into cracks in the concrete. The bacteria use quorum sensing to determine when enough bacteria have accumulated, triggering production of a mixture of calcium carbonate and a "bacterial glue", which combines with the bacterial cells to fill the crack. This mixture hardens to be as strong as the surrounding concrete.[1][2]
Environmental impact
Prolonging the life of concrete could reduce CO2 emissions derived from concrete production.[3]
References
- 1 2 3 Clay Dillow (16 November 2010). "Engineered Bacteria Can Fill Cracks in Aging Concrete". Popular Science. Retrieved 8 April 2016.
- 1 2 3 "'BacillaFilla' for concrete cracks". Phys.org. Retrieved 2013-06-12.
- ↑ "Genetically Modified Bacteria Can Fix Cracked Concrete | Inhabitat - Sustainable Design Innovation, Eco Architecture, Green Building". Inhabitat. 2012-03-26. Retrieved 2013-06-12.