A new type admixture was developed fbr super workab 】 e concrete in water ・ cement ratio of40 −55%. lhe cost of concrete using this adrnixture will be iess expensive because of using less powder and admix 重 ure conten 重 . This admixture is the polycarboxylate 1ype watcr − soluble copeiyrner composed of the cement dispersing componen1 and the water reducing component which effect segregation resistance
This paper aims to suggest the stripping time of sheathing and the initial curing method of con − crete , in order to ensure the qual 疑 y of concrete in structure ,
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