mixture the resultant wet cement brine mixture was placed in a hot water bath 160 u00b0 f to 180 u00b0 f for fifteen minutes the wet cement brine mixture was then removed from the water bath and allowed to cool after 5 hours the composition was completely set as a solid a fifty five percent 55 by weight concentrated brine containing sodium chloride crystals was evaluated the brine was sticky but pumpable a glass jar was charged with 91 0 grams of brine and 80 0 grams of no 1 portland cement the contents were homogenized for approximately 30 seconds using a propeller driven by a hand drill to produce a wet cement brine mixture the resultant wet cement brine mixture was placed in a hot water bath 160 u00b0 f to 180 u00b0 f for fifteen minutes the wet cement brine mixture was then removed from the water bath and allowed to cool after 5 hours the composition was completely set as a solid thus it has been found that wastewater brines containing significant amounts up to 30 or more of sodium chloride and in some embodiments further including crystalline sodium chloride as well as silica in the 1.