Durability of sulphate resisting slag blended cements and mortars in sea water

The hydration characteristics as well as the sea water attack of sulphate-resisting slag content up to one year have been studied. The results show that with the increase in slag content the rate of hydration of cement pastes in water decreases. The compressive strength of the cement mortars immersed in sea water increases up to 6 months then decreases, The free lime content decreases with time due to the reaction of chloride ions with Ca(OH)(2). The Cl- and SO3 contents increase with time of immersion in sea water.