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Hi in order to obtain a nice tidy smooth slab of concrete, eg for a drive, a shed etc, should the mix contain, large and small aggregate, eg 20mm stones 10mm, or even 10mm down to smaller gravel, obviously sharp sand, I believe if you ordered a ready mix to your property, it would have a precise mix.
Reason for asking I just did a smallish slab with just 20mm ballast, and it was hard to get a smooth finish, for a novice, also from my research online, is it true to say when starting the finishing phase, straight after screeding should a wooden or resin float be used to smooth and push down the aggregate, as using a mag float would trap the bleed water, and mag float should be used for the final phase, I've more to do, however I only have a mag float, and resin are pricey, but if it's needed then it's needed, just want to be clear.
Reason for asking I just did a smallish slab with just 20mm ballast, and it was hard to get a smooth finish, for a novice, also from my research online, is it true to say when starting the finishing phase, straight after screeding should a wooden or resin float be used to smooth and push down the aggregate, as using a mag float would trap the bleed water, and mag float should be used for the final phase, I've more to do, however I only have a mag float, and resin are pricey, but if it's needed then it's needed, just want to be clear.