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Currently, Indian cement industry is having option of increasing production of blended Portland cements using supplemeniary cementitious materials and utilizing raw materials principally derived from industrial by-products, such as various siags, for responding rapidly to the perceived societal need of sustainability in manufacturing practice and green development.It will not only help in solving the environmental pollution problems associated with the disposal of these wastes but also help in conservation of natural resources which are fast depleting.However, careful analysis of the industrial practice reveals that majority of the commercial manufacturers rely more on using supplementary cementitous materials/blended cement route for increasing sustainability while very limited population try and utilize industrial by products while clinkerisation.