1. 1"Standard Test Method for Bulk Density of Granular Refractory Materials ," ASTM Designation (2-357-85. 1987 Book of ASTM Standards, Vol. 15.01 ; pp. 124 -26 . American Society for Testing and Materials, Philadelphia, PA.
2. 2"Standard Test Methods for Apparent Porosity, Water Absorption, Apparent Specific Gravity, and Bulk Density of Burned Refractory Brick and Shapes by Boiling Water ," ASTM Designation C-20-83. 1987 Book of ASTM Standards, Vol. 15.01 ; pp. 7 -10 . American Society for Testing and Materials. Philadelphia, PA.