game_hunter wrote:I'm also hoping someone with shotcrete experience could look at this stuff and say easily just based on their experience and the specifications whether it has any chance of working.
It does not use any Portland cement. Grancrete replaces Portland with magnesium oxide and potassium phosphate, but I do not know (or I do not recall) what Gigacrete uses. However, Google returns 8 hits for:http://www.google.com/search?q=gigacret ... m+oxide%22
Create Healthy Homes
Gigacrete Makers of magnesium oxide and magnesium chloride-based building products, including Stucco Max
There are many (dozens/hundreds of?) well-known commercialized substitutes for Portland, and Richard McCabe has stated on the ferrocement list that none of them (other than fly-ash, of course, but only as a partial substitute) do as good of a job as the real thing. Given that he seems to be an environmentalist, and given that many of the substitutes for Portland are claimed to use far less energy to produce, I find myself inclined to believe him.
Here is a thread from Apr 29, 2005 on Gigacrete:http://bbs.monolithic.com/viewtopic.php ... crete#5983
I also checked out gigacrete and stuccomax too. Gigacrete is only available if you open a factory and make panels (costs range from 1.2 - 5+ million). Stuccomax looks like a great product too but is only available in 2,000# bags and you have to get it shipped from Las Vegas, NV. Both gigacrete and stuccomax are available through Structures U.S.A.
In addition, there are three other year-2005 threads, from January, April and November, asking about Gigacrete, but no substantive information is provided.
This blog says:http://materialicio.us/tag/cement
Gigacrete [...] Products include: PanelSystem, Stuccomax, StuccoMax-E (Environmental), Floor Overlay, PlasterMax, GigaCast and GigaPatch.
So, maybe Stuccomax is the same thing as Gigacrete, but without the coarse aggregate.