BIS CERTIFICATION FOR SUPERSULPHATED CEMENT
IS 6909:1990

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.

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. 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.

When tested according to the methods specified, supersulphated cement shall meet the chemical and physical requirements specified in the standard. The manufacturer must ensure that the cement meets the requirements of this standard. A laboratory shall be adequately maintained, in which the various tests shall be carried out according to the methods specified in the standard.

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

Packing of supersulphated Cement shall be done as per IS 6909:1990. Labelling and marking shall be done in accordance with the standard. 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. The Manufacturer must obtain a BIS license from the Bureau of Indian Standards to use a standard mark (ISI Mark). The BIS grants a license based on a successful assessment of manufacturing infrastructure, quality control and testing capabilities, and production process.

Indian Stantdard for Cements

IS Number	Product Name
IS 1489 (PART 2)	PORTLAND POZZOLANA CEMENT
IS 16415:2015	COMPOSITE CEMENT
IS 455:2015	PORTLAND SLAG CEMENT
IS 12330	SULPHATE RESISTING PORTLAND CEMENT
IS 12600	LOW HEAT PORTLAND CEMENT
IS 1489 (PART 1): 2015	PORTLAND POZZOLANA CEMENT
IS 269:2015	ORDINARY PORTLAND CEMENT
IS 3466:1988	MASONRY CEMENT
IS 8042:2015	WHITE PORTLAND CEMENT
IS 6452:1989	HIGH ALUMINA CEMENT
IS 8043:1991	HYDROPHOBIC PORTLAND CEMENT
IS 8229:1986	OIL WELL CEMENT
IS 15895:2011	HIGH ALUMINA REFRACTORY CEMENT
IS 16993:2018	MICROFINE ORDINARY PORTLAND CEMENT

NOTE:

For Detailed Information about the Procedure for BIS ISI Certification

Conclusion:

If a product falls under the scope of the BIS Conformity Assessment Scheme, All the manufacturers, importers, and foreign entities must obtain BIS ISI Certification. The Bureau may cancel the License if the product fails to meet certification requirements.

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