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The amount of dissolved
solids in drinking water is almost always less than 1000 ppm. For a water/cement
ratio of 0.5, this corresponds to quantity of solids being about 0.05% of the
weight of cement. This quantity is too insignificant to cause any trouble.
However, where drinking water
contains a high concentration of sodium or potassium & aggregate-alkali
reaction is apprehended , such water should not be used.
It should be noted that water
not fit for drinking may often also be satisfactorily used for making of
concrete. Water with pH of 6 to 8 which does not taste saline or brackish is
suitable for use. Dark color or bad smells do not necessarily mean that
deleterious substances are present.
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