Hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder, and method of preparing the same |
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| 申请号 | US14604874 | 申请日 | 2015-01-26 | 公开(公告)号 | US10065892B2 | 公开(公告)日 | 2018-09-04 |
| 申请人 | KONGJU NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION; | 发明人 | Jin-Man Kim; Sun-Mi Choi; Ji-Ho Kim; | ||||
| 摘要 | Disclosed are a hydraulic binder composition using rapidly-cooled steelmaking reduced slag powder and a method of preparing the same. More particularly, the rapidly-cooled steelmaking reduced slag (RC-LFS) powder is obtained by spraying and scattering gas at a high pressure and high speed onto electric furnace smelting reduction slag, which is one of the by-products generated during iron smelting performed in an ironworks, and quickly cooling and pulverizing the slag. The initial high hydration heat reaction and initial setting of the rapidly-cooled steelmaking reduced slag (RC-LFS) powder are delayed to ensure workability. A retardant and gypsum are mixed into the rapidly-cooled steelmaking reduced slag (RC-LFS) powder so as to activate the generation of needle-shaped ettringite and to thus develop the initial and long-term strength, and therefore the rapidly-cooled steelmaking reduced slag (RC-LFS) powder of the present invention can be used as a substitute for ordinary Portland cement. | ||||||
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