Whats the purpose of cement in a slurry mix?

[John the tile]

Hey all.

The SBR is for sealing the surface and any dust and so to help control the suction of the moisture from following application - either slc or addy.

Just for my reference, whats the role of cement in a sbr slurry mix? Is it to provide a key for the following application?

Should i not be adding water to activate the cement?

ta

[whitebeam]

You can add a bit of water to thin the sbr for the cement, you could mix some course sand, cement and sbr which would give it a good key when set..which is the reason for the cement.