1. Gypsum for Civil Construction - Determination of Physical Properties of Powder - Test Method;ABNT NBR 12127,1991
2. Gypsum for Civil Construction - Determination of Physical Properties of Gypsum Paste - Test Method;ABNT NBR 12128,1991
3. Gypsum for Civil Construction - Determination of Mechanical Properties - Test Method;ABNT NBR 12129,1991
4. Gypsum for Buildings - Specification;ABNT NBR 13207,1994
5. Portland cement and Other Powdered Material - Determination of Density;ABNT NBR NM 23,2001