Heat-resistant concrete, also known as refractory concrete, is a mixture of refractory aggregate with special high-alumina cement. It is used for making concrete screeds in furnaces, refractory bricks - chamotte bricks for insulating the doors of central heating furnaces. It is also used for quick repairs of refractory element defects. It is also used as a sealant for the chimney flue. The operating temperature of heat-resistant concrete is 1350 degrees Celsius.
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