发明名称 |
Processing additives for blended cements |
摘要 |
This invention relates to a method of enhancing the later age strength of certain blended cements. Under the process of this invention, certain blended cements, in particular those made from cement clinkers containing at least 4% C4AF, when mixed with up to 0.2% triisopropanolamine exhibit a marked increase in 7 and 28-day compressive strengths. The blended cements of this invention contain between 5 and 60% fillers or clinker substitutes. The triisopropanolamine strength enhancing additive may be admixed with the cement powder or may be interground with the cement clinker during finish milling.
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申请公布号 |
US4943323(A) |
申请公布日期 |
1990.07.24 |
申请号 |
US19890418437 |
申请日期 |
1989.10.06 |
申请人 |
W. R. GRACE & CO.-CONN. |
发明人 |
GARTNER, ELLIS M.;MYERS, DAVID F.;GAIDIS, JAMES M. |
分类号 |
C04B7/00;C04B24/12;C04B28/02 |
主分类号 |
C04B7/00 |
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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