Supersulphated cement is a kind of hydraulic cement formed by combining various raw materials such as calcium sulphoaluminate clinker, gypsum, limestone, and so on as well as other ingredients. Because of its specific composition and qualities, this cement differs from typical Portland cement (OPC).This cement has quick setting and hardening qualities, making it ideal for speedy construction. Its long-term durability makes it an excellent choice for quick repairs, grouting, shotcrete, and precast concrete.

To ensure the product quality of supersulphated cement, the Bureau of Indian Standards (BIS) has made it mandatory for manufacturers to undergo BIS registration and obtain the BIS ISI mark before selling it in the market. Manufacturers can use the ISI Mark on their products only after obtaining a license from BIS that is granted after BIS registration. The presence of the ISI mark on a product indicates that it complies with BIS's stringent quality standards.

IS 6909:1990 covers supersulphated Cement. This standard specifies the requirements for the composition, production, and testing of supersulphated cement. Super-sulfated cement has various advantages over ordinary Portland cement, including low hydration heat evolution, excellent sulphate resistance, and the use of less clinker and more gypsum.

REQUIREMENTS FOR IS 6909: 1990

1.     Supersulphated cement shall be made by intergrinding or intimately blending a mixture of granulated blast furnace slag, calcium sulphate, and a small amount of 33 grade ordinary Portland cement, Portland clinker, or any other lime source.

2.     The mixture's dry granulated blast furnace slag component must be at least 70% by mass. The cement must be ground finer than 33 grade ordinary Portland cement, and the manufacturing method must ensure intimate blending of its constituents.

3.     When tested according to the methods specified, supersulphated cement shall meet the chemical and physical requirements specified in the standard. 

4.     The manufacturer must ensure that the cement meets the requirements of this standard.

5.     A laboratory shall be adequately maintained, in which the various tests shall be carried out according to the methods specified in the standard.

6.     Packing of supersulphated Cement shall be done as per IS 6909:1990.

7.      Labelling and marking shall be done in accordance with the standard.

8.     The BIS Standard Mark (ISI Mark) shall be printed on each bag or drum of supersulphated Cement or on the label applied to it, provided that the material in each bag or package to which the mark is thus applied meets the specification.

9.      The Manufacturer must obtain a BIS license from the Bureau of Indian Standards to use a standard mark (ISI Mark).

TESTS

The following test shall be carried out for supersulphated cement in accordance with the method specified.

·       Fineness

·       Setting time

·       Compressive Strength

·       Transverse Strength Test

·       Soundness

·       Chemical requirement

Process for BIS ISI Mark Certification

To know the process in detail, please visit:

• ISI Mark Certification for Domestic Manufactures
• ISI Mark Certification for Foreign Manufactures

Under BIS Registration Products ISI and CRS

• BIS CRS Registration For IT Products List
• ISI Mark Registration For ISI Products List

Indian Standard for Cements

CONCLUSION

Supersulphated cement has been included in the mandatory ISI Certification Scheme under the IS 6906: 1990 standard. This product cannot be exported, imported, or sold in the Indian consumer market without the ISI Mark imprinted.

If you need any assistance with BIS ISI registration for Supersulphated cement or ISI mark certification for Supersulphated cement, you can reach out to Evtlindia. We provide assistance with all documentation formalities with India's BIS office, ensuring a smooth and hassle-free registration experience, guiding you through the entire process from start to finish.

You can contact us via email at contact@evtlindia.com or by phone at 9560935898. Feel free to get in touch with us anytime for the support you need.