Hello!

I've heard that there is some sort of agent you can add to concrete when casting so you don't have to vibrate it. Does anyone know anything about it?
 
You can order the concrete as "self-compacting".

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there is also reinforced concrete so you can skip the reinforcement
 
If I mix myself?
 
sika has products

viscocrete is for self-compacting
sikafiber is reinforcement you mix in
 
I've heard that the concrete more easily flows through the gaps, which are difficult to avoid for example with edge molds for slab on ground.
 
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