SURFACE TREATMENT MATERIAL FOR CONCRETE AND MASONRY CONSISTING OF A DRY MIXTURE OF PULVERIZED IRON, ALUMINUM STEARATE, AND ALUMINUM CHLORIDE WHICH IS TO BE MIXED WITH SUFFICIENT WATER TO YIELD A BRUSHABLE SLURRY WHICH IS THEN APPLIED TO THE SURFACE OF CONCRETE OR MASONRY TO RENDER IT MORE RESISTANT TO THE PENETRATION OF WATER