Physical, mechanical and technic spects
Hardness (mohs) : 4
Unit volume by weight (gr/cm3) : 2, 50
Density (gr/cm3) : 2, 72
At atmospheric pressure
Water absorptionBy weight(%): 1, 0
By volume(%): 2, 3
Water absorption at boiling waterBy weight(%): 1, 2
By volume(%): 3, 0
Porosity (%): 2, 3
Compressive strength (kgf/cm2) : 570
Compressive strength after freezing (kgf/cm2) : 582
Strength to blow Kgf.Cm/cm3: 11
Strength to bending Kgf/cm2: 108
Modules of elasticity Kgf/cm2 : 5, 38x10/4*
Ratio of fullness (%) : 91, 9
Degree of pores (%) : 8, 1
Average abrasion strength (cm/50 cm2) : 28, 7
Average tensile strength (kgf/cm2) : 41
Chemical analysis (%)
Sio2 0, 26
Fe2o3 0, 32
Cao 54, 55
Mgo 0, 31