Calcinations loss……. 2,9 %
Silex……. 64,5 %
Iron Oxide…………. 6,8 %
Aluminium Oxide………. 17,2 %
Calcium Oxide………. 0,7 %
Magnesium Oxide……… 2,1 %
Potasium Oxide……….3,6 %
Sodium Oxide……… 1,9 %
Sulphates expessed as SO3…….Inf. 0,1 %
Visible volumetric mass………..2720 KG/M3
Absorption coefficient……….0,616%
Breaking load through indirect stress by bending………24,3 MPa
Breaking load through indirect stress by bending after cooling………..20,0 MPa
Wear by attrition: abrasion coefficient in tribometer……………….7,57 MM
 OBS.: 1 MPa = 10,2 Kg.f / Cm.2