Levelling concrete floor - Cement / PVA slurry?

[WELLY417]

Hi
Found this great old thread which seems to be the answer to my problem of levelling a concrete floor where thickness required is too much to use standard self-levelling compound and too little for standard screed. Relevant bits:

“ The only real solution is to bring the whole floor up to the same level.
There are lots of ways of doing this for a 10mm level difference. You
could use a runny concrete slurry as a thick self levelling compound
(most self levelling compounds can only be used up to around 3-4mm thick,
which is why you have to make your own slurry).”
“We did this in one of the rooms in our last house. Just mixed up a
slurry using cement and fine sand (1:4), using PVA in the gauging water
(around 1:4 PVA:water). Worked great.”

Just wondering if anyone has tried the 'PVA cement slurry' as described and knows how wet you can get away with making the mix without problems. My plan is to mix it properly runny so that it does actually self-level but unsure if this will compromise set strength? A ratio of pva&water : dry mix would be really useful if anyone knows?
Thanks in advance for any help.

 

[mattysupra]

This is incorrect to do. Just use levelling compound and fill with aggregate. Most compounds can be used up to 20mm deep when filled. You can also get deep section compounds that can be laid up to 50mm