发明名称 |
Concrete surface air void reduction admixture |
摘要 |
A method of reducing the surface voids and imperfections of molded cement structures by forming the cement composition with an admixture comprising a combination of Welan Gum and a water reducing agent.
|
申请公布号 |
US5180430(A) |
申请公布日期 |
1993.01.19 |
申请号 |
US19910777854 |
申请日期 |
1991.10.16 |
申请人 |
W.R. GRACE & CO.-CONN. |
发明人 |
GARTNER, ELLIS M.;FERRARIS, CHIARA F. |
分类号 |
C04B28/02;C04B24/38 |
主分类号 |
C04B28/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|