It is impossible to reverse.
If you have added too much water to your mix just add more sand and cement ;but do this right away.
Portland cement (and the concrete, mortar, thin set, or other masonry product made from it) doesn't dry. Rather, it cures by a chemical reaction initiated by putting water in it. The reaction is irreversible; hence, adding water to cement is an irreversible change.
its irreversible
Sort of... You can regain the salt by evaporation of the water but you can never regain the unspoiled water
Mixing cement and water is a reversible change because the two substances can be separated by allowing the water to evaporate, leaving the solid cement behind. This process does not alter the chemical composition of either the cement or the water.
reversable
Cement undergoes a chemical reaction called hydration when it is mixed with water, forming a hard and strong material. This reaction creates new compounds that cannot be reversed back into their original state through simple drying or evaporation. Once cement has fully cured, the bond created between the water and cement particles is permanent.
reversable
Reversible
Cement itself is not waterproof, but when mixed with water and other materials to make concrete, it can be made waterproof by adding additives or sealants.
That depends on what is being mixed together. Two examples of this are: If you mix sand, gravel, and water it is reversible and you can separate the mixture back to its original three parts. If you mix sand, gravel, water, and cement powder it is not reversible as the water will react with the cement powder creating liquid cement and the sand and gravel will form concrete with the liquid cement. After a few hours the liquid cement in the concrete will set and the concrete mixture will become as hard as rock. It is now no longer possible to separate the mixture back to its original four parts.
IRREVERSIBLE