| 发明名称 |
EXPANDING ADDITIVE TO CEMENT |
| 摘要 |
<p>FIELD: manufacture of straining, expanding and shrinkage-free cements and concretes. SUBSTANCE: expanding additive comprises spent catalyst for purifying natural gas and accompanying oil gases containing at least 75% of Al2O3 and gypsum, ratios of components being as follows, wt %: said catalyst, 15- 20; and gypsum, 80-85. EFFECT: greater thickness of structure of cement stone and reduced transmissivity thereof. 2 tbl</p> |
| 申请公布号 |
RU2149844(C1) |
申请公布日期 |
2000.05.27 |
| 申请号 |
RU19980122709 |
申请日期 |
1998.12.18 |
| 申请人 |
GOSUDARSTVENNYJ NAUCHNO-ISSLEDOVATEL'SKIJ, PROEKTNONA I ZHELEZOBETONA;K I TI BETONA I ZHELEZOBETONA |
发明人 |
MARTIROSOV G.M.;TITOVA L.A.;BEJLINA M.I.;TITOV M.JU.;LEBEDEV A.O.;SIDENKO I.L.;POSYSAEV A.N.;BUKREEVA T.V. |
| 分类号 |
C04B7/00;C04B18/04;C04B22/08;C04B40/00;(IPC1-7):C04B7/00 |
主分类号 |
C04B7/00 |
| 代理机构 |
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