发明名称 Method for producing a centrifugally cast concrete product
摘要 A method for producing centrifugally cast concrete product including charging pumpable concrete into a cylindrical form and rotating the form to cast the concrete by a centrifugal force, in which the concrete contains a high water reducing agent, an air entraining agent and an inorganic fine powder, and 5.5 to 18.5% of air content, thereby considerably reducing the amount of discharged sludge and, in turn, the labor and expenses required for the disposal of sludge, while maintaining the strength of the product as same as or greater than that for conventional products, without the need for complex processes.
申请公布号 US4844855(A) 申请公布日期 1989.07.04
申请号 US19870109468 申请日期 1987.10.16
申请人 ONODA CEMENT CO., LTD. 发明人 OMORI, YOSHITAKA;SUZUKI, KANZI;NIINUMA,FUMITOSHI
分类号 B28B21/30;C04B28/02;C04B28/04 主分类号 B28B21/30
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