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| Number | Title | Issue Date |
| 7304104 | Cement admixture, cement composition and method for laying work the same, and method for producing cement hardened product The cement admixture of the present invention can provide viscosity decreasing ability as well as a high dispersing ability and slump loss preventing ability even in a high water reducing ratio range. The above-mentioned cement admixture comprises three components o... | 12/04/2007 |
