CERAMIC MATERIAL FOR MANUFACTURE OF WALL ARTICLES, MAINLY, CLAY BRICK Russian patent published in 1999 - IPC

FIELD: building materials, particularly, production of brick and structural clay tiles; applicable in construction of buildings. SUBSTANCE: ceramic material for manufacture of wall articles includes fusible clay and process mineral additive in form of carbonate-siliceous zeolite- containing rock of mixed mineral composition containing, wt.%: opal-cristobalite 30-45; clinoptilolite 8-25; calcite 11-28; clay component 15-35, with particles sizing less than 1 mm with the following amounts of ingredients, wt.%: fusible clay 70-75; carbonate- siliceous zeolite-containing rock of mixed mineral composition 25-30. Physico-mechanical properties of manufactured articles compression strength 19.5-29.4 MPa; porosity 32.1-33.9%; density of voidless articles 1.67- 1.71 g/cu.cm; density of articles with voids 1.30-1.33 g/cu. cm. EFFECT: increased brick compression strength and improved heat-insulating properties. 1 tbl