|
physicochemical indexes of low creep clay bricks |
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| Project / Grade | DRN-125 | DRN-120 | RN-42 | RN40 |
| AL2O3 % ≥ | 45 | 42 | 42 | 40 |
|
apparent porosity ,AP % ≤ |
22 | 22 | 22 | 22 |
|
Volumetric Density ,BD g/cm3 |
2.15∽2.35 | 2.00∽2.20 | 2.00∽2.20 | 2.00∽2.20 |
| CCS Mpa ≥ | 40 | 35 | 35 | 30 |
|
degree of fire resistance，℃ ≥ |
1760 | 1760 | 1760 | 1740 |
|
load softening Start temperature，0.2Mpa ℃ |
≥1410 | ≥1350 | ||
|
rate of change of heavy burn line,PLC% |
0.1∽-0.3 | 0.1∽-0.3 | 0∽-0.4 | 0∽0.5 |
| 1400℃×2h | 1350℃×2h | 1400℃×2h | 1350℃×2h | |
| Creep Rate% | 0.8 | 0.8 | ||
| 1250℃ | 1200℃ | |||
