发明名称 |
Additives for cementitious materials |
摘要 |
Superplasticizers with improved water reducing properties for cement, cement slurries, mortar, grout and concrete are formed from synergistic mixtures of (1) aromatic sulfonic acid formaldehyde condensates, such as the sodium salt of naphthalene sulfonic acid formaldehyde condensate and (2) hydroxy aromatic compounds such as pyrogallol and gallic acid. Addition of these mixtures to the same cementitious materials also results in improved compressive strength.
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申请公布号 |
US4391645(A) |
申请公布日期 |
1983.07.05 |
申请号 |
US19820367263 |
申请日期 |
1982.04.12 |
申请人 |
DIAMOND SHAMROCK CORPORATION |
发明人 |
MARCELLIS, ALPHONSO W.;JOHNSON, GRANNIS S. |
分类号 |
C04B28/02;(IPC1-7):C04B7/35 |
主分类号 |
C04B28/02 |
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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