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افت روندگی
Particularly the work time (time to flow loss) is mo^ or less u^-.n^ted already at 25vol% reactive alumina.
At 5°C the problem is delayed set, at 35°C, placement of the castable could be problematic because of the rapid flow loss.
The rapid flow loss at 35°C will definitely cause installation problems if used under such conditions.
At 20°C however, the set is significant quicker, a full flow loss is experienced after slightly more than one hour.
To compensate for the flow loss, one could add more water, but as this transforms into porosity upon firing, water addition should be kept at a minimum.
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