发明名称 |
Ultra high-strength hydraulic cement compositions |
摘要 |
An ultra high-strength hydraulic cement composition contains a binder, fine aggregates, coarse aggregates, an antifoaming agent, water and a specified admixture and has a unit amount of the binder in the range of 480-1800 kg/m<SUP>3</SUP>. Water and the binder are contained at a ratio of 10-25% and the admixture is contained in the amount of 0.2-3.5 weight parts per 100 weight parts of the binder. The binder may be cement or a mixture of cement and a microscopic powder admixture. The admixture is one or more selected from reaction mixtures obtained by specified two processes and partially or completely neutralized substances obtained from such a reaction mixture through these two processes and also a specified third process. The specified two processes include initiating a radical copolymerization process of a radical polymerizable monomer mixture containing maleic anhydride and a monomer of a specified kind in a non-aqueous system in the presence of a non-aqueous radical initiator and stopping the radical copolymerization reaction in its midst while the inversion rate of polymerization is at a specified level by adding water to the reaction system to thereby obtain a reaction mixture. The specified third process is for partially or completely neutralizing the reaction mixture.
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申请公布号 |
US7259197(B2) |
申请公布日期 |
2007.08.21 |
申请号 |
US20040976188 |
申请日期 |
2004.10.27 |
申请人 |
TAKEMOTO YUSHI KABUSHIKI KAISHA |
发明人 |
MITSUI KENROU;KOJIMA MASAROU;OKAMOTO KEISHIROU;YONEZAWA TOSHIO;KINOSHITA MITSUO;IIDA MASAHIRO;SAITOU KAZUHIDE;TAMAKI SHINJI |
分类号 |
C04B24/26;C04B28/02;C04B28/18 |
主分类号 |
C04B24/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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