发明名称 |
PORTLAND CEMENT |
摘要 |
FIELD: building materials industry, more particularly production of cement. SUBSTANCE: cement comprises portland cement clinker, heat treated active mineral additive and gypsum. Said active mineral additive includes tripoli prefired at 1100-1300 C for 15- 30 minutes. The ratio of components is as follows (wt %): 75-99 portland cement clinker; 1-25 said mineral additive; 3-5 gypsum based on clinker weight. EFFECT: greater strength of element at normal water consumption and higher frost resistance thereof. 1 tbli
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申请公布号 |
RU2122530(C1) |
申请公布日期 |
1998.11.27 |
申请号 |
RU19980104352 |
申请日期 |
1998.03.24 |
申请人 |
OSTROVLJANCHIK EVGENIJA SERGEEVNA |
发明人 |
OSTROVLJANCHIK E.S.;OSTROVLJANCHIK V.JA.;POTAPOVA E.N. |
分类号 |
C04B7/13;C04B18/02;C04B28/04;(IPC1-7):C04B7/13 |
主分类号 |
C04B7/13 |
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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