Drywall Scraps and Mud

So, I was looking into drywall mud as a stabilizer for adobe bricks and earthen plaster.
Portland cement added to adobe in small amounts can make the resulting bricks stable.
Drywall mud can set up very hard and some of the dry formulations can set up wicked fast.

The gypsum in drywall is already set up, but it could still prove useful.

Anyways I'm soliciting ideas, so hit me up!

William, I am trying to determine what you are after?
Is it something to help strengthen adobe earth blocks?
What do you mean by "dry formulations can set up wicked fast."?
Portland cement can be added to soil if you do not want to make test bricks, no more than 10% by volume.
Portland cement works against the ability of moisture to pass through earth blocks. It also causes issue of water retention and destruction of the block or plaster.
If lime is added to soil, no more than 5% works ok, without any moisture penalties.

You have to remember there are differences between adobe which is air dried bricks and Compressed earth bricks which use force to stay together.
About 20% of compressed bricks will fail since no osmosis takes place between the soil particles,
which is why air dried adobe bricks, with the correct wide range of sand / clay mix, do stay together.
I am sure Gypsum is never used as an additive to earth mixtures for building purposes.
It is used in growing food because-
"Gypsum helps soil better absorb water and reduces erosion.
It also cuts down on phosphorus movement from soils to lakes and streams and improves the quality of various fruits and vegetables, among other benefits.”

I have no set use in mind.
I just see cheap and free materials and I wonder what they can be used for.

The dry formulations are powdered versions of the drywall mud that comes in buckets.
They come in formulations that set up at 90, 60, 20 or 5 minutes.

Portland cement added to adobe in the right amounts is said to make the adobe impervious to water in a way it otherwise is not.
Portland cement is used in other mixtures to get them to reliably and quickly set as a solid.
I am suggesting using drywall joint compound in similar ways.

If I understand correctly, drywall joint compound is mostly gypsum that has been heated till the water is driven off.
This happens at a relatively low temperature, which makes it less resource intensive than Portland cement.

The two things I see a using a joint compound/ soil mix for are seed starting pots and finishes.

Thanks William for your thoughts. Interesting.
I also love using materials simply because they dont cost much or are just available.
Using portland cement in earth plasters will cause that plaster and any earth behind it to degrade because of moisture retention.
I have a view about earth building that portland cement is best left alone, use research and experiments to get the soil correct, rather than tipping cement in.
Maybe one of us should fiddle with some soil and drywall powder to see if it does anything?