发明名称 |
CEMENT ADMIXTURE AND METHOD FOR PRODUCING SAME |
摘要 |
<p>Provided are: a cement admixture having excellent strength developability and an excellent durability-improving effect; and a method for producing the cement admixture. A cement admixture which contains an SiO2-Al2O3-based substance produced by the heat treatment of a catalyst residue produced during the purification of petroleum at 350 to 950°C inclusive in an oxidative atmosphere, wherein an SiO2 component is contained in an amount of 40 to 55%, an Al2O3 component is contained in an amount of 40 to 55%, R2O is contained in an amount of 1% or less, and the ignition loss is 1% or less, the Blaine's specific surface area is 3000 to 9000 cm2/g, an anhydrous gypsum is additionally contained, and the anhydrous gypsum is contained in an amount of 20 to 80 parts and the SiO2-Al2O3-based substance is contained in an amount of 20 to 80 parts. A method for producing the cement admixture, which comprises milling an SiO2-Al2O3-based substance produced by the heat treatment of a catalyst residue produced during the purification of petroleum at 350 to 950°C inclusive in an oxidative atmosphere and an anhydrous gypsum separately and then mixing these components together or milling and mixing the components simultaneously.</p> |
申请公布号 |
WO2013054568(A1) |
申请公布日期 |
2013.04.18 |
申请号 |
WO2012JP65423 |
申请日期 |
2012.06.15 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA;TOMIOKA, SHIGERU;MORIOKA, MINORU;YAMAMOTO, KENJI;HIGUCHI, TAKAYUKI;TANAKA, KUNIYUKI |
发明人 |
TOMIOKA, SHIGERU;MORIOKA, MINORU;YAMAMOTO, KENJI;HIGUCHI, TAKAYUKI;TANAKA, KUNIYUKI |
分类号 |
C04B14/04;C04B22/06;C04B22/14;C04B28/02 |
主分类号 |
C04B14/04 |
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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