NEW RESULTS FOR CA-470 TI TEMPERATURE INDEPENDENT CEMENT - ROBUSTNESS AGAINST LOW TEMPERATURE AND IMPURITIES

摘要

The new temperature independent cement CA-470 TI is an additive free 70% Al_2O_3 cement for use in low and ultra low cement castables (LCC and ULCC). Previous investigations have shown the advantages of the new cement demonstrating a much more stable setting behaviour at different ambient temperatures between 5 and 35 °C when compared to normal 70 % Al_2O_3 cement [1,2]. When using CA-470 TI, the castables can be adjusted to a normal setting start time in the range of 1.5 to 2.5 hours at 20°C, and they will still provide a reasonable setting start time at 5 °C