SECAR® 51 is a fused hydraulic binder with a mineralogy focused on monocalcium aluminate to give strong hydraulic activity and impart excellent mechanical properties to conventional concretes. This binder is recommended when rapid hardening properties are required. It is adapted to all types of placing methods, particularly casting and gunning at service temperature of 1400°C and above. The low iron oxide content of SECAR® 51, when combined with appropriate aggregates, makes it particularly suitable for concretes having to withstand carbon monoxide reducing atmospheres.
Typical properties of a castable based on SECAR® 51
| Formulation type | Conventional castable based on chamotte (40% Al2O3) 15% cement | ||
| Water addition (%) | 11 |
| Initial flow | 125 |
| At 30 minutes | 100 |
| At 60 minutes | 100 |
| After 20 seconds vibration | 170 |
| After drying at 110°C for 24 hours | 68 |
| After firing at 800°C for 6 hours | 40 |
| After firing at 1100°C for 6 hours | 32 |
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