[TY]Ordinary Portland Cement
Negotiable /Ton
Min.Order:1 Ton
Wuxi Tianyin Refractories Co., Ltd.
[TY]Ordinary Portland Cement
Ordinary portland cement, Portland cement clinker, 5% - 20% of the mixed materials and the amount of pulverized gypsum made of water hydraulic cementitious materials. With high strength, high hydration heat, good frost resistance, dry shrinkage, good wear resistance, good resistance to carbonation, poor corrosion resistance, high temperature resistance.
Cement Specifications: Type 1 425 Chemical composition | |||||
Amount | ISIRI389 | Amount | ISIRI389 | ||
Silicon dioxide %SiO2 | 20.5 – 21.5 | Insotuble Residue %I.R | 0.30 – 0.50 | <0.75 | |
Aluminium Oxide %AL2O3 | 4.2 – 5.6 | Free Lime %Free CaO | 0.80 – 1.70 | ||
Ferric Oxide %Fe2O | 3.00 – 3.60 | Lime Saturation Factor LSF | 93.0 – 95.0 | ||
Calcium Oxide %CaO | 64.0 – 66.50 | Silica Module SLM | 2.30 – 2.50 | ||
Mangnesium Oxide %MgO | 1.0 – 2.7 | <5.0 | Alomina Moddule ALM | 1.1 – 1.3 | |
Sulphur Trioxide %SO3 | 1.5 – 2.3 | <3.0 | Tricalcium Silicate %C3S | 56.0 – 62.0 | |
Potassium Oxide %K2O | 0.60 – 0.75 | Dicalcium Silicate %C2S | 14.0 – 18.0 | ||
Sodium Oxide %Na2O | 0.45 – 0.65 | Tricalcium Aluminate %C3A | 8.05 – 8.50 | ||
Loss On Ignition %L.O.I | 0.90 – 1.60 | <3.0 | Tetracalicium Aluminoferri %C4AF | 9.0 – 11.0 |
Physical Test | |||
Unit | Amount | ISIRI389 | |
Blaine Test | (Cm2/gr) | 3200 -3400 | >2800 |
Autoclave Expansion | (%) | 0.09 - 0.20 | <0.8 |
Setting Time: | |||
Initial | (Minute) | 105 - 160 | >45 |
Final | (Minute) | 135 - 300 | <360 |
Compressive Strength: | |||
After 3 Days | (Kg/Cm2) | 230 - 260 | >100 |
After 28 Days | (Kg/Cm2) | 420 - 440 | >425 |
Remarks: | |||
LSF = 100 CaO/(2.80 SiO2 + 0.65Fe2O3 + 1.18Al2O3) | |||
C3S = 4.07 CaO - (7.6 SiO2 + 6.718 Al2O3+ 1.43 Fe2O3 + 2.852SO3) | |||
C2S = 2.867SiO2 - 0.754C3S | |||
C3A=2.65 Al2O3 - 1.692 Fe2O3 | |||
C4AF = 3.043 Fe2O3 |