Fireclay Brick — Refractoriness Under Load (RUL)

The graph shows the result of an RUL test on a test piece taken from a fireclay brick (approx. 35% Al2O3);
Test conditions: 0.2 N/mm2; 5 K/min; static air.
At 960°C the test piece reaches its maximum expansion. Deformations of 0.5%, 1.0% and 2.0% have been achieved at 1210°C (T05), 1240°C (T1), and 1270°C (T2) respectively.

RUL/CIC 421 - Apparatus for determining refractoriness under load

The RUL/CIC Apparatus RUL/CIC 421 enables determination of the deformation point under compression and the creep in compression with one instrument without retrofitting. Furnace, load device, differential measuring system, control and software are designed for reliable, automatic long-term operation.