CEM I 42,5 R Portland Cement
CEM I 42,5 R Portland Cement
| Product Name | CEM I 42,5 R Portland Cement |
| Description | It is a cement with high early strength and high final strength obtained by grinding Portland Cement clinker with set regulator gypsum in accordance with EN-197-1 standards. Up to 5% of secondary additive components are added at the grinding stage. |
| Usage Areas | CEM I 42.5 R type cement is ideal for use in subway tunnels and precast applications as it provides high early strength and shortens the demoulding time. Fast reaction time and high hydration temperature provide benefits in cold weather applications. It is also suitable for use in ready-mixed concrete facilities, shotcrete applications, grout concrete, joint, mortar, plaster and screeds. |
| Sales Method | Bags between 25-50 kg
1.5 tons of slingbags Stretch hood with a capacity of 1.5-1.75-2 tons without pallet 1,5 ton bigbag Bulk *Can be supplied with a maximum of 2 ppm water-soluble chromium content in accordance with customer demand and legal regulations. |
| Conditions of Use | After pouring, appropriate curing and protection processes should be applied on the exposed surfaces of the concrete for at least 7 days.
Freshly poured concrete should be protected against the risk of freezing in cold weather. Concrete should be protected against cracking and thermal risks, as the loss of water in the concrete by evaporation will increase in hot weather and mass concrete casting applications. Due to the nature of the raw materials used in clinker production, slight color differences may occur. Our company is not responsible for problems arising from workmanship errors. |
| Storage | Contact of cement with air and moisture can cause hydration and change its properties. Therefore, in order to provide the recommended shelf life;
• Bulk cements should be stored in metal or reinforced concrete silos in a way that they will not come into contact with air and moisture. • Bag cements should be protected from humid environments. Bags should not be in direct contact with the ground, but should be stacked on pallets or timber. • It should be covered with a roof or cover so that it does not come into contact with direct sunlight. Stacking instructions and shelf life under appropriate conditions are available on the bag. Environmental and Safety information can be found in the Safety data sheet |
| Chemical Requirements | Units of Measurement | Std. Limits | Test Results |
| SiO2 | % | 18,00-21,00 | |
| Al2O3 | % | 4,20-6,20 | |
| Fe2O3 | % | 2,60-5,00 | |
| CaO | % | 60,00-66,70 | |
| MgO | % | 1,00-3,70 | |
| SO3 | % | Max. 4,00 | 2,00-3,70 |
| Cl | % | Max. 0,1 | 0,0010-0,0400 |
| Loss on Ignition (LOI) | % | Max. 5,00 | 0,80-4,70 |
| Insoluble Residue | % | Max. 5,00 | 0,05-1,75 |
| Free CaO | % | 0,25-2,70 | |
| Cr (VI) | ppm | 1-40 | |
| Na2O | % | 0,02-0,35 | |
| K2O | % | 0,30-1,10 | |
| Na2OEq. (Na2O + 0,658*K2O) | % | 0,25-0,90 | |
| Total Additives | % | Max. 5,00 | 0,00-4,99 |
| Lime Saturation Factor (LSF) | – | 96,50-108,40 | |
| Silica Modulus (SM) | – | 1,80-2,60 | |
| Alumina Modulus (AM) | – | 0,90-2,00 | |
Physical and Mechanical Requirements |
Units of Measurement | Std. Limits | Test Results |
| Specific Gravity (ISO 17892-3) | gr/cm3 | 3,07-3,18 | |
| Specific Surface (EN 196-6) | cm2/g | 3100-4400 | |
| Residue on 0,045 mm (EN 196-6) | % | 0,2-7,0 | |
| Residue on 0,090 mm (EN 196-6) | % | 0,0-1,0 | |
| Initial Setting Time (EN 196-3) | Minute | Min. 60 | 90-245 |
| Final Setting Time (EN 196-3) | Minute | 130-330 | |
| Soundness (EN 196-3) | mm | Max. 10,0 | 0,0-4,0 |
| Normal Consistency (EN 196-3) | % | 25,0-29,0 | |
| Compressive Strength Method, EN 196-1 |
Units of Measurement | Std. Limits | Test Results |
| 2 Days | MPa | Min. 20,0 | 21,0-35,0 |
| 28 Days | MPa | Min. 42,5 Max. 62,5 |
48,0-62,5 |
