French equivalent of Postcrete?

Is there a French equivalent of Postcrete?

I need something that is pre-mixed and sets in around 5-10 minutes.

There is, i used it to replace gate posts at SILs house last year. Got it from local brico but cant remember what it was called - ciment prompte maybe. Put in hole and add water…

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This……we used for our fence posts

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That’s what we used as well, worked a treat as well.