"Softener" concrete...

[kjellon]

Does anyone know where to get hold of Plasticerare/Superplasticerare intended for use in concrete in Sweden?

Googled a bit and it seems that as a private person you cannot access these products...

Anyone know?

Thanks!
Kjell

 

[heimlaga]

Through some concrete station, I would guess.

What are you going to do with them?

 

[kjellon]

Through some concrete station, I would guess.

What are you going to do with them?

Some general casting works in molds, but primarily right now countertop slabs for the kitchen is the plan.

K

 

[heimlaga]

Well....for countertops, you need concrete that is so thick that it can't be packed into the mold without plasticizer? It should have as few water pores as possible, and to achieve that, the amount of water should be kept low so that the cement can bind most of the water.

For regular casting, you don't need any additives.

 

[mexitegel]

I have used expanderbetong and it becomes completely pore-free without any additives.

 

[kjellon]

I have used expanding concrete and it becomes completely void-free without any additives.

Hmm, ok.
How thick/thin is the expanding concrete?
I would preferably like to avoid too much vibrating...

 

[mexitegel]

The expanding concrete is very fluid and should not be vibrated at all. A few taps with a rubber mallet around the edge of the form are sufficient.

 

[fsn]

Well....for countertops, you need concrete that is so thick it can't be packed into the mold without plasticizers? It should have as few water pores as possible, so the water content must be kept low so the cement can bind most of the water.

For regular castings, you don't need additives.

I also find it hard to see any problem making a countertop without flow.

I have a bottle of flow (1 liter) and I indeed got it from a concrete station, and it was basically a gift from a kind concrete contractor when I had an issue with a casting. When I picked it up, they mentioned that it's not something they give out to private individuals (and that I shouldn't drink it).