发明名称 |
Cement compositions for stowing cavities |
摘要 |
<p>A cementitious composition comprises (a) 20-90 wt% of an hydraulic cement containing 7-90 M% 12CaO.7Al2O3 (the balance of its hydraulic constituents being calcium silicate), (b) 5-60wt.% calcium sulfate (e.g. anhydrite), (c) 2-10 wt% another inorganic salt (e.g. sodium carbonate) and (d) 0.5-10wt% a clay (e.g. bentonite). The composition when made up with water is flowable and quick-setting and can be used for the stowing of cavities, for example in the construction of supportive packs in underground mines.</p> |
申请公布号 |
GB2159512(A) |
申请公布日期 |
1985.12.04 |
申请号 |
GB19850013786 |
申请日期 |
1985.05.31 |
申请人 |
* BLUE CIRCLE INDUSTRIES PLC |
发明人 |
PETER ALAN * LONGMAN;NORMAN HAROLD * DREW |
分类号 |
C04B28/06;E21F15/00;(IPC1-7):C04B11/30 |
主分类号 |
C04B28/06 |
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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