FIELD: building material production. SUBSTANCE: cement comprises, mas. %: portland cement clinker, 50-90; mineral additive, 10-50. Mineral additive is treated by heat at 150-300 150 - 300° till the loss of hydrate water is 50-80 %. Said additive comprises mixture of flask and phosphogypsum at their ratio from 20: 1 to 3:1. EFFECT: decreased ratio of water and cement and increased strength of cement while its cost decreased.
| Title | Year | Author | Number |
|---|---|---|---|
| PORTLAND CEMENT | 1998 |
|
RU2122530C1 |
| PRODUCTION OF NANOCEMENT AND NANOCEMENT | 2013 |
|
RU2544355C2 |
| ACTIVE MINERAL ADDITIVE FOR CEMENT AND METHOD FOR PREPARATION THEREOF | 2015 |
|
RU2581437C1 |
| ACTIVE SYNTHETIC ADDITIVE FOR CEMENT AND METHOD FOR ITS PREPARATION | 2020 |
|
RU2733360C1 |
| CEMENT | 1998 |
|
RU2129996C1 |
| METHOD FOR PRODUCING CEMENT | 1996 |
|
RU2101246C1 |
| SPECIAL PORTLAND CEMENT | 1998 |
|
RU2123984C1 |
| RAW MIX FOR PREPARING PORTLAND CEMENT CLINKER HAVING SET MINERALOGICAL COMPOSITION | 1998 |
|
RU2129997C1 |
| METHOD OF RECOVERING WASTE ADSORBENT | 2009 |
|
RU2415720C1 |
| FIBROUS NANOCEMENT AND PREPARATION METHOD THEREOF | 2015 |
|
RU2595284C1 |
