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Portland Cement Type 2 is the modified cement that, due to its medium resistance to corrosive environments and having moderate heat of hydration, is used in all general applications and construction of foundations, relatively bulky structures, and environments with medium corrosion degree.
| Physical Properties of Type Cement 2 | ||||||
|---|---|---|---|---|---|---|
| Autoclave Expansion (%) | Blaine | Reception time | pushing resistance | |||
| primitive | Final | 3 days | 7 days | 28 days | ||
| ≤0.8 | ≥2800 | ≥45 | ≤360 | ≥100 | ≥175 | ≥315 |
| Chemical Properties of Type Cement 2 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Specification name | Sio2 % | AL203 % | fezo3 % | Mgo % | SO3 % | Lol % | IR % | C3A % |
| Value in Standard 389 | ≥20 | ≤6 | ≤6 | ≤5 | ≤3 | ≤3 | ≤0.75 | ≤8 |
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| Row | Type of Cement | Type of Test | Forced limits matching Iran Standard under No. ISIRI389 | Delijan Cement Specs |
| 5 | Portland Cement Type 5 | 3 day Compressive Strength | Min 85 kg/cm2 | 220+_10 kg/cm2 |
| 7 day Compressive Strength | Min 150 kg/ cm2 | 340+_10 kg/cm2 | ||
| 28 day Compressive Strength | Min 270 kg/ cm2 | 450+_15 kg/cm2 |
Slag is the material collected on top of blast kiln of smelting iron and known as waste products of steel industry. If slag is gets cold slowly, it is crystal shape that is not consumed a lot. But if we make it cold fast, it gets amorphous or glassy that is used after milling, is applied in cement industry. While milling the slag you have to pay attention that where slag hardness is more that cement, each of them has to be milled separately and finally mix them. In Iran slag cement is divided to 3 kinds that will be said as follows:
| Row | Type of Cement | Type of Test | Forced limits matching Iran Standard under No. ISIRI389 | Delijan Cement Specs |
| 2 | Portland Cement Type 1-425 | 2 day Compressive Strength | Min 100 kg/cm2 | 200 +_ 10 kg/cm2 |
| 28 day Compressive Strength | Min 425 kg/cm2 Max 625 kg/ cm2 | 530 +_ 15 kg / cm2 |
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