Conventional heat-resistant chamotte concretes

Symbol	Granularity [mm]	Max. working temp.[^oC]	Min. common refractoriness sP	Min. Al₂O₃ content [%]	Concrete consumption [t/m3]	Make-up water amount [l/100kg]
B??S110	0-3 - 0,5	1100	127		1,85	12
BOS125	0-3 - 0,5	1250	145	32	1,9	11
BOS135	0-3 - 0,5	1350	154	35	2,1	10
BOS145	0-3 - 0,5	1450	171	45	2,3	10

Technical parameters after drying and baking

Symbol	after drying in 110 °C			after baking in working temperature
Symbol	Effective porosity [%]	Apparent density [g/cm3]	Shear strength [MPa]	Effective porosity [%]	Apparent density [g/cm3]	Shear strength [MPa]	Contraction (-) [%]
B??S110	25	1,85	10	31	1,79	15	-1
BOS125	25	1,85	25	27	1,9	20	-1
BOS135	20	2,15	25	25	2,1	20	-1,3
BOS145	23	2,2	30	28	2,3	25	-1,5