Influence of forming pressure on frost resistance of ceramics

The object of research is low-melting clays the Kyiv region (Ukraine). work devoted to study obtaining ceramic materials resistant low temperatures. Frost resistance one most important characteristics for regions in which are used with frequent temperature transitions through 0 °C. production frost-resistant wall determined by type raw and technological parameters. main methods increasing frost are: use less dispersed clays; batch homogenization; formation material without textural defects prevention cracks during drying firing. shows that existing can be implemented reducing water absorption due creation a microporous structure predominantly closed pores increased pressure semi-dry method formation. An increase pressing leads an number contacts molecules mass at stage Due this, strength molded samples more than 30 MPa higher compared plastic method. It was also found makes it possible speed up process products, energy consumption their production. 50 MPa, obtained 55.4 while 22.9 MPa. Water absorption, on contrary, dry 9.3 %, 12.2 % firing 1000 shown effective way improve quality based local low-plasticity clay materials. Saving natural resources, developing new sources comprehensive improvement products environmental friendliness remain today.