IS 6909
Cement - Super sulphated cement
Summary
Supersulphated cement is a special blended cement made mainly from granulated blast furnace slag, gypsum, and a small amount of Portland cement clinker. It offers high resistance to sulphate attack, low heat of hydration, and is suitable for marine, underground, and aggressive soil conditions.
Why BIS Certificate is Mandatory for SUPERSULPHATED CEMENT ?
BIS certification is mandatory to ensure supersulphated cement meets Indian safety and performance standards. It verifies quality, strength, chemical composition, and durability, preventing structural failures. BIS certification also protects public safety and ensures only standardized cement is used in construction projects in India.
What is BIS Certified for SUPERSULPHATED CEMENT ?
The BIS certified specification for supersulphated cement is IS 6909 – Supersulphated Cement — Specification. It defines requirements for raw materials, chemical composition, fineness, compressive strength, setting time, soundness, and performance tests to ensure durability and resistance to sulphate environments.
Test required For SUPERSULPHATED CEMENT
| Title | Mandatory/Optional |
|---|---|
| Granulated Slagt | Required |
| Clinker | Required |
| Insoluble residue | Required |
| Magnesium oxide | Required |
| Sulphuric anhydride (SO3) | Required |
| Sulphide Sulphur | Required |
| Chloride Content | Required |
| Fineness | Required |
| Soundness (Cold expansion) | Required |
| Setting Time | Required |
| Compressive strength | Required |
| Optional | Optional |
Benefits of BIS Certification for SUPERSULPHATED CEMENT
1. Assured Quality and Performance -
BIS certification ensures the cement meets prescribed strength, fineness, and setting time standards, resulting in reliable construction quality
2. High Durability in Aggressive Conditions -
Certified supersulphated cement offers proven resistance against sulphate attack, making it ideal for marine structures and sewage systems.
3. Safety and Structural Reliability -
BIS testing reduces the risk of cracks, expansion, and long-term structural damage, ensuring public safety.
4. Legal Compliance and Market Acceptance -
BIS certification is mandatory in India, enabling manufacturers to sell legally and participate in government and infrastructure projects.
5. Environmental and Cost Benefits -
BIS-certified supersulphated cement uses industrial by-products like slag, reducing carbon emissions and lowering construction costs while maintaining performance.