Water should be potable, free of sulfates (more than 0.1%), chlorides (more than 0.5%), sugar or suspended matter are avoided.
Excess water causes exudation, reduces strength, increases shrinkage and porosity of the hardened grout, which may thus fail to provide the necessary protective function of the corrosion reinforcement.
In the execution of the grouts, in particular in the mixture of its components, the following rules are followed: