Hydration behaviour of flyash/slag based composite cement

The study aimed to look into the hydration behaviour of composite cement based on different percentages of lime, flyash/slag as per EN197-2000. Degree of hydration has been compared by evaluating the non-evaporable and calcium content with compressive strength of 1:3 mortar cubes. The higher non-evaporable content and less lime content in case of lime slag composite cement compare to lime flyash composite cement indicates higher degree of hydration in former case and hence higher compressive strength. Further it has been observed that with 5 & 10% lime early stage of hydration is either more or comparable to control mix which indicates that C3S dissolution is more.