BioMason is a North Carolina startup company that manufactures bricks without heat or clay. About 8% of global carbon emissions come from making bricks, according to the company’s co-founder, Ginger Krieg Dosier, citing information from the EPA. The BioMason process not only creates no carbon emissions, it even re-uses the water needed to make its bricks. Founded in 2012 by Dosier and her husband, Michael, the building-materials company grows bricks and masonry from scratch without the need for any heat. While traditional brick making requires heating clay in kilns at 2,000 degrees for several days — which releases massive amounts of carbon emissions into the atmosphere — BioMason injects sand with microorganisms to initiate a process like the one that creates coral. The technique takes four days. Once completed, the bricks are strong enough for use in houses, commercial buildings, and other structures. http://cleantechnica.com/2016/02/29/huge-cuts-in-brick-co2-emissions-coming-from-startup-biomason/ Indian scientists also published their work about bio cement few months ago: http://inpressco.com/wp-content/uploads/2015/08/Paper1042880-2883.pdf
As I understand it, they already use mushrooms to form moldings for cars. They seed mushrooms in a mold and the mushroom grows until it fills the entire mold, at which time it is removed and coated with a hardening substance. The result is indistinguishable from plastic forms.
