Mullite grog 200M:
The nice thing about grog: With only small amounts of aggregate not waterglass required.
Higher amounts of aggregate require waterglass.
Very low water demand.
Grog mixtures can be very liquid with very low viscosity.
Depending on the amount of water used less than 10% lye may suffice.
Without lime or cement curing takes a long time.
Grog geopolymers have a relatively low porosity and thus a high density
and can achive high strength while still full of water.
Grog is the simplest to use, but most expensive.
Small amounts of activated clay can be used to prevent segragation in grog mixtures.
Minspar Feldspar 200M:
Low water demand.
Feldspars take long to cure, even with an accelerator.
Ball Clay/Kaolin (acid activated):
Clays have a high water demand and clay mixtures have a high viscosity.
Ball Clay requires more water than kaolin.
As ram mass with LTGS binder very small amounts of lye are sufficient
and no waterglass is required.
Castable mixtures with LTGS binder and high aggregate content are possible,
but without waterglass relatively brittle.
Together with a LTGS binder Waterglass with very low solid content (200g-250g/liter) could be used.
For very fine grog or feldspar and clays the same aggregate/pozzolan ratio as with perlite or zeolite can be used
and will give a stronger result.
The higher the water demand the more volume you will get per weight of the solids.
Soda ash is much cheaper as sodium hydroxide but is weaker and needs 1.33 times more than sodium hydroxide.
Could be either used directly or sodium hydroxide solution could be gained from it with help of calcium hydroxide.
Sodium carbonate react with calcium hydroxide
Na2CO3 + Ca(OH)2 → CaCO3 + 2NaOH
chemiday.com/en/reaction/3-1-0-383
106g Na2CO3 + 74.1g Ca(OH)2 + water.
The insoluble calcium carbonate precipitates and settles to the bottom.
The remaining liquid is sodium hydroxide solution and can be poured off.
The solution contains 80g NaOH
minus a small amount remaining with the precipitated calcium carbonate.
Diatomaceous earth is pure SiO2.
To make waterglass you can mix it with lye in the same ratio as for silica gel,
but it will take a bit longer to dissolve.
Relatively low prices for lye
www.ebay.com/sch/essentialdepot/m.html?item=110521756618&hash=item19bb9c2bca%3Ag%3A1s8AAOSwpdpVdN2a&rt=nc&_trksid=p2047675.l2562