[Greenbuilding] bio bricks?

[Bob Waldrop]

Beginning with sand, a liquid mixture of bacteria, nitrogen, food for 
the bacteria, a calcium source, and water are added.  Over 5 days, the 
liquid is gradually added until the food and water run out and the sand 
dries.  At that point, it is a concrete brick, with strength comparable 
to anything that has come before.

https://www.minds.com/blog/view/418891791245250560/award-winning-low-footprint-bricks-grown-with-sand-and-bacteria-it039s-a-big-deal

*Bob Waldrop, Okie City

*

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