How long must you wait before the cement for a swing dries?

We cemented very deep for a wooden swing. Can our 3 year old granddaughter use the swing after 3 days?|||3 days should be ok ,it depends if the ground is cold and wet,or hot and dry ,but for a swing it should be cured enough not to move. the cement will be a lighter color when it dries also|||concrete acquires 90% of its strength in 24 hours. it is safe to drive on in a week so go ahead use the swing. it is ready|||cement takes 27 days to cure,


but if just your granddaughter is using it


it should be ok,


after 3 days,|||cement takes 28 days to cure.but after 3 days for a young child.it will be o.k.good luck.