Empty block 25 Our products Empty block 10 Empty block 12 Empty block 15 Empty block 20 height 40 cm Width 25 cm Height 20 cm average weight 20 kg/piece average density 950 kg/m3 Fracture stress (net area) Not less than 4.14 N mm² (average) (not less than 3.45 N mm²) per block Average absorption 6% Materials used Dolomite cement – Portland cement Colors used inorganic oxides