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The Effect of Dihydrate Gypsum on Properties of Marine Engineering High Performance Composite Binder

WANG Cheng-qi(Shanghai Harbor Engineering Design and Research Institute,Shanghai 200032,China)  
To satisfy durability and construction of marine engineering concrete,composite binder is used to put up marine engineering high performance concrete.Properties of composite binder is compared with that of ordinary silicate cement,and the effect of dihydrate gypsum on properties of composite binder is emphatically studied.The results indicate that the effect of SO3 on workability and setting time is little,but the effect of SO3 on early intensity and electric quantity reflecting of resisting chloride ion permeability is remarkable.Higher SO3 quantity of composite binder has higher early intensity and resisting chloride ion permeability.
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