BURAKAST – 70
High Alumina Refractory Cement
Al₂O₃ content
68 - 71 %
High Alumina Refractory Cement engineered to endure severe thermal stress and high-heat environments, providing the bonding strength, setting performance and durability required across heavy industrial applications.
Chemical analysis
| Aluminium Oxide (Al₂O₃) | 68 - 71 % |
|---|---|
| Calcium Oxide (CaO) | 27 - 30 % |
| Iron Oxide (Fe₂O₃) | 0.1 - 0.3 % |
Physical properties
| Initial Setting Time | 30 - 100 Minutes |
|---|---|
| Final Setting Time | 100 - 240 Minutes |
| CCS — 1 Day (cured at 18°C ± 2°C / 24 hrs) | 40 - 50 MPa |
| CCS — 2 Days (cured at 110°C / 24 hrs) | 50 - 65 MPa |
| Specific Surface (Blaine) | 3800 - 4400 cm²/g |
| Residue on 90 µm (170 mesh) | ≤ 5 % |
CCS values: 1 : 3 vibrated mortar using standard graded sand.
