CERAMIC MASS FOR THE MANUFACTURE OF SEWER PIPES Russian patent published in 2022 - IPC C04B33/138 

FIELD: construction materials industry.

SUBSTANCE: invention relates to compositions of masses for the manufacture of ceramic sewer pipes and can be used in the construction materials industry. The ceramic mass includes the following components, wt. %: refractory clay 37.5-40.0; refractory plastic clay 34.5-35.0; dehydrated clay 15.5-17.5; cupola slag 4.0-6.0; cullet 3.6-5.4; soda ash 0.2-0.3; quartz sand 0.2-0.3, chopped glass fiber (ZrO₂ 16.8%) with a diameter of 15 microns and a length of 6-20 mm with a softening temperature of 860-950°C, 4-7, over 100%.

EFFECT: increase in water resistance, a decrease in water absorption and an increase in bending strength.

1 cl, 2 tbl