This type of cement (Ordinary Portland Cement) is used for public purposes without the specific characteristics of concrete and in all reinforced and non-reinforced concrete structures that are required to initial and more final resistance.
Property
- Ideal for general purpose (cement masons and building block and structural internal applications, etc)
- Resistance to the frost
- The cement 1-325 often provides specifications of type 2 (except resistance of sulfate ions and hydration heat)
Chemical characteristics of Portland Cement type 1-325
| Features | ASTM C-114 | Profile of Nahavand Cement Type 1-325 |
|---|---|---|
| Insoluble residue | Max 0.75 | 0.40 |
| Loss of ignition | Max 3.0 | 2.2 |
| Sulphur trioxide | C3A>8 Max 3.5 C3A<8 Max 3.0 |
2.2 |
| Magnesium oxide | Max 5.0 | 1.8 |
Physical characteristics of Portland Cement type 1-325
| Features | ASTM C-114 | Profile of Nahavand Cement Type 1-325 | |
|---|---|---|---|
| Specific surface Blaine (Cm2/g) | Min 2800 | _3000 | |
| Autoclave expansion(%) | Max 0.8 | _0.05 | |
| Autoclave expansion(%) | Max 0.8 | _0.05 | |
| Setting time | Initial (min) | Min 45 | 150-175 |
| Secondary (h) | Max 6 | 3-4 | |
| Comp.streng(kg/cm2) | 2-day | Min 120 | 150-170 |
| 7-day | Min 200 | 300-320 | |
| 28-day | Min 325 | 380-400 | |
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