[Stoves] New material for making stoves

[Crispin Pemberton-Pigott]

Dear Friends

There is a guy working in South Africa who has started making stoves using a geopolymer.  I know about him because we at the North-West University (Potchefstroom campus) gave him a contract to produce stoves parts using his material.

He has since become inspired to produce a single pot stove of quite some complexity using a geopolymer material made from fly ash and blast furnace slag.  It is less than 1/10th the cost of metal and does not involve cement.

It is my considered opinion  that this is the future of small stove production material.  There are several initiatives at the moment investigating how to make these materials which fall into an acidic group and an alkaline group. They are quite different in content but essentially work the same way - the polymerisation of rock.

https://www.facebook.com/photo/?fbid=10158354891850945&set=a.10150437064445945

Notice the fine detail of the parts.  The strength would amaze you.  The material can be made to foam internally after pouring so the walls are insulated - remarkably so. It is also resistant to fracture.  If you hit it hard enough, it will dent instead of breaking like pottery.  You can hammer a nail through it.

The "True Source" for useful information is the book Geopolymers, 5th edition, by Prof Davidovits in France.

Regards
Crispin
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