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Sulphate-resisting portland cement
Standard:SRPC 400-D0 GOST 22266-94, GOST 30515-97
Production cycle:
- raw meal preparation;
- raw meal baking and clinker preparation;
- clinker grinding with gypsum and production of sulfate-resistant portland cement;
Application range:
Sulphate-resisting portland cement is intended for manufacture of concrete and concrete-steel constructions having resistance to corrosion on exposure to media that are aggressive in their sulfate content.
| PARAMETERS | CLINKER CHARACTERISTICS |
CEMENT PROPERTIES |
| Chemical analysis | ||
| % SiO2 | 21,43....21,50 | 21,40....21,51 |
| % Al2O3 | 4,43....4,52 | 4,20....4,50 |
| % Fe2O3 | 4,53....4,90 | 4,55....4,95 |
| % CaO | 62,35....62,70 | 62,5....63,7 |
| % MgO | 1,50....1,52 | 1,60....1,72 |
| % K2O | 0,92....1,35 | 0,99....1,24 |
| % Na2O | 0,18....0,25 | 0,17....0,30 |
| % SO3 | 0,59....0,73 | 2,20....2,40 |
| Rating module | ||
| SR (saturation ratio) | 88,60....89,70 | 88,58....89,75 |
| Silicate module | 2,34....2,40 | 2,32....2,39 |
| Aluminate module | 0,96....0,98 | 0,94....0,98 |
| Tricalcium silicate (C3A) , % | 3,92....4,42 | 0,70....3,20 |
| Physical tests | ||
|
Specific surface, cm2/gm |
2800....3000 | |
|
Compression ultimate strength at the age of 28 days, MPa |
39,4....40,4 | |
| Initial setting, min | 235....250 | |
| Final setting, min | 280....325 | |
