Coromandel SRC is manufactured as per the IS 12330-1988 specification. The Compressive Strengths and Setting Properties are designed to suit the best construction requirements. The Bureau of Indian Standards have specified the use of such Sulphate Resisting Cement for aggressive environments and they specified the maximum limit of 5% C3A in such cements.
Sulphate Resistant Cement (SRC) is a blended cement designed to improve the performance of concrete in the event of a sulphate attack. It also provides improved durability for concrete in most aggressive environments, reducing the risk of deterioration of the structure.
The proportioning of constituent materials in a concrete mix is a complicated matter which can be influenced by many factors. We recommend that trials be conducted with the available materials to ascertain optimum cement contents for specific classes of concrete.
Strength development in Portland cement concrete is affected by a number of factors such as the physical and chemical properties of the cement, water to cement ratio, admixtures, curing and environmental conditions.
Concrete produced with a sulphate resistant cement may require less water to achieve a specified level of workability and setting times may also be significantly extended.
A minimum curing period of seven days is recommended for all exposure classifications. Concrete should be maintained in a continually moist condition wherever practicable. Water sprays, wet sand or moisture retaining techniques, such as clear polyethylene sheets or curing compounds are recommended. Curing should begin upon the completion of surface finishing or in accordance with manufacturer’s instructions where
The 'shelf life' of Portland cement products is dependent on the storage conditions. It is recommended that Portland cement products be re-tested prior to use if the age of the cement exceeds three months. Portland cement products are highly alkaline materials and are significantly affected by exposure to water. Full Safety, Storage, Handling and Disposal information is available in the specific product.