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Effect of hydrated lime,anhydrite and limestone powder on performance of slag cement

LIU Ren-yue,WANG Shan,ZHANG Tong-sheng Sinoma(Suzhou) Construction Co.,Ltd.Suzhou 215300,Jiangsu,China  
The properties of blast furnace slag cement could be improved by adding hydrated lime,anhydrite and limestone powder as activators.The results showed that blast furnace slag cement with suitable activator had superior properties.Compared to slag cement without activator,Slag cement with activator had higher early compressive strength and denser structure.When compared to ordinary Portland cement,The early dry shrinkage ratio of slag cement could be improved by the addition of hydrate lime,anhydrite and limestone powder and the rate of dry shrinkage would be a little bit larger for long term,nevertheless still less than that of slag cement without limestone powder.
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