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Sulphate Resistant Ordinary Portland Cement (OPC) is a specialized type of cement designed to withstand high concentrations of sulphates in soil and water. It is produced by modifying the chemical composition of traditional OPC to reduce the formation of expansive compounds that can lead to deterioration. This cement is typically used in construction projects where the risk of sulphate attack is significant, such as in foundations, pavements, and structures exposed to aggressive environments.
| Chemical composition | Lower tricalcium aluminate (C3A) content |
| Strength class | Typically 32.5 to 52.5 MPa |
| Standard sizes | Available in 25 kg, 50 kg bags, and bulk |
| Setting time | Initial set around 30-60 minutes, final set around 6-8 hours |
| Storage conditions | Keep dry and protected from moisture |
When selecting sulphate resistant OPC cement, consider the specific environmental conditions of your project, particularly the sulphate concentration in the soil or water. It's important to specify the desired strength class and any relevant certifications that may be required for your application. Additionally, provide information on the quantity needed, as bulk orders may have different pricing and delivery options compared to bagged cement.
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It is a type of cement formulated to resist damage from sulphates in soil and water.
It is commonly used in infrastructure, marine structures, and foundations in sulphate-prone areas.
It has a lower tricalcium aluminate content, making it more resistant to sulphate attack.
Typically, strength classes range from 32.5 to 52.5 MPa.
It should be kept dry and protected from moisture to maintain its quality.
Consider the environmental conditions, required strength class, and quantity needed.