To use Fast-Setting Concrete, all you must do is add water to the pre-mix. This sounds simple, but often when being delivered to the store, the mix is exposed to the elements. If caught in the rain or humidity long enough, the concrete mix will absorb some of the moisture and begin hardening.

How long does quick dry cement take to dry?

Depending on the amount you use, quick-drying Quikrete concrete can set in as little as 10 minutes, although the common time for larger projects is between 20 and 40 minutes [source: Pavement Package].

How long does quick cement take to harden?

This product sets in 20 - 40 minutes. Wait 4 hours before placing heavy objects. Note - For best results, do not overwork the material. QUIKRETE® Fast-Setting Concrete can be walked on in 2 hours.