Will less water in Hot Mud fire it off quicker

I've used 45 minute (easy sand) hot mud to mix a medium firm yet wet - thick enough to be firm but soft enough that I create mud biscuits (mud studs) on sheetrock that I lay directly only concrete wall.

Phase 2 - due to layout, I was mixing easy sand 45 minute WITH cold water - thicker than normal as I needed to put the mud on the walls and then slap the sheetrock on. I needed it fairly thick so it was a tad dryer than normal..
After letting it slack for like 5 minutes, I did add a tad of water.

Long story short, it fired off way too quick than I expected....

So off to buy Easy Sand 90. Hopefully it will do the trick AND OR is the lack of water making it fire off quicker-too quick regardless.

I've got a ledger board I plan to screw and support the sheetrock to as the mud sets.

 

I've never heard of 'mud studs' or 'mud biscuits'

The drier you mix hot mud, the quicker it will set. Mixing the mud too wet will cause it to take longer to set up.

 

I'm terming the word biscuits - when old school tile setters create *thinset* biscuits to level and addup to level a floor when laying tile.

In my case, I'm attaching sheetrock to a cement poured wall that is not furred out with furring strips. So I'm creating *mud studs* as I lay the sheetrock to the wall....

 

So the the hot mud is the only thing holding the drywall to the wall? have you done this before? do you know it will work long term?

 

And how will you run your electrical? Why not conventional framing?

 

There is a ledger block to hold it ontop in which I plan to screw,

As well, once I have it where I need it, I also put a couple of concrete screws *GRK caliburn* just to hold things in place as the hot mud sets...The scews I suppose you can consider it mechanical fastening as well....


I know I'm cheating here but furring out the wall is not a option just due to how I need the sheetrock to line up.

It works though. Before I did this area, I did the *triangle* area underneath my stairs (which is getting a built in by a cabinetmaker so you won't ever see the back) right now, there is a 2" gap from the floor and the rock is holding. Taped and sanded and all. and it' looks fine.....

 

Ray . We were posting this at the same time.
I'm not doing the whole room like this.

I'm just doing some *intricate* sheetrocking on a wall that meets a stairstringer and I need to get the sheetrock flush with the *outside* of the stringer. The sheetrock I cut and have not hung...test holding it into position looks great if not it sitting *right inside* the stringer.