发明名称 |
Method of grouting a drill hole |
摘要 |
Calcium sulphate hemihydrate plaster slurry comprising a set-inhibiting agent, for example, a polymer or copolymer of an acid having the formula R1HC=CR2-COOH wherein R1 and R2 are hydrogen or methyl. The invention also includes a method of rapid setting of the inhibited slurry by mixing therewith a promoter comprising a salt of iron, copper or aluminium.
|
申请公布号 |
US4236849(A) |
申请公布日期 |
1980.12.02 |
申请号 |
US19790024080 |
申请日期 |
1979.03.26 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES LIMITED |
发明人 |
KENNEDY-SKIPTON, HENRY K. |
分类号 |
C04B28/14;C04B40/06;C09K8/46;E21D20/02;F16B13/14;(IPC1-7):E02D3/12 |
主分类号 |
C04B28/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|