# Cenocell

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Concrete material using fly ash in place of cement

Cenocell samples

**Cenocell** is a [patented](/source/Patent) [concrete-like](/source/Concrete) structural material that is manufactured without the addition of [Portland cement](/source/Portland_cement).[1] It was invented by [Mulalo Doyoyo](/source/Mulalo_Doyoyo) at the [Georgia Institute of Technology](/source/Georgia_Institute_of_Technology).[2][3]

Cenocell is produced from a [chemical reaction](/source/Chemical_reaction) involving [fly ash](/source/Fly_ash) or [bottom ash](/source/Bottom_ash) and various [organic chemicals](/source/Organic_compound). The chemical reaction produces foaming, and results in grey slurry that resembles bread dough. The mixture is then [cured](/source/Curing_(chemistry)) in ovens at temperatures near 100°C. The result is a [homogenous mixture](/source/Mixture) with a high strength and low weight.[4]

## See also

- [Sulfur concrete](/source/Sulfur_concrete)

## References

1. **[^](#cite_ref-1)** [US patent 8057594](https://worldwide.espacenet.com/textdoc?DB=EPODOC&IDX=US8057594), Mulalo Doyoyo & Paul Biju-Duval, "High strength pozzolan foam materials and methods of making the same", published 2011-11-15, assigned to Georgia Tech Res Inst

1. **[^](#cite_ref-2)** Toon, John. ["New Material Provides Strong and Lightweight Alternative to Concrete – without Cement"](https://gtresearchnews.gatech.edu/newsrelease/coal-ash.htm). *gtresearchnews.gatech.edu*. Retrieved 2023-02-21.

1. **[^](#cite_ref-3)** Yende, Sizwe Sama. ["Innovator loses out to Chinese because 'they are also black'"](https://www.news24.com/citypress/business/innovator-loses-out-to-chinese-because-they-are-also-black-20200109). *Citypress*. Retrieved 2021-09-27.

1. **[^](#cite_ref-4)** ["Ashes to Cenocell"](https://www.theengineer.co.uk/content/news/ashes-to-cenocell/). *The Engineer*. 27 November 2008. Retrieved 2023-02-21.

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