Method of treating magnesium oxchloride and magnesium oxysulfate articles to reduce efflorescence

摘要

A method of improving the surface characteristics of a formed article of magnesium oxychloride or magnesium oxysulfate cement is shown in which molded articles of magnesium oxychloride or magnesium oxysulfate are treated with water at temperatures of 90 DEG F. to 212 DEG F. (32.2 DEG C. to 100 DEG C.) for periods of 1 to 30 minutes or longer to prevent the formed article from efflorescing.