FIELD: chemistry.
SUBSTANCE: chemical additive for increasing the strength of cement products containing acidic substances that enter into an exchange interaction with the products of cement slurry hydration with the formation of insoluble compounds that accelerate the hardening process of cement stone, characterized in that sulfuric acid spent pickling solutions of steel-rolling plants of density 1.23 g/cm3, containing (wt %) 19.8-20.5 acidic substances with the following ratio of components (g/l): sulfuric acid - 36.0-38.0; ferrous sulphate (II) - 203.0-205.0; ferric sulfate 5.0-7.0; water 980-986.
EFFECT: increasing the strength of cement products.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| CHEMICAL ADDITIVE FOR CEMENT ARTICLES | 2015 |
|
RU2612185C1 |
| BUILDING MIXTURE | 1981 |
|
RU2030367C1 |
| METHOD OF PREPARING IRON-CONTAINING COAGULANT | 2010 |
|
RU2424195C1 |
| METHOD FOR OIL-CONTAINING SOIL RECOVERY BY CHEMICAL TREATMENT | 2017 |
|
RU2706945C2 |
| BINDER | 0 |
|
SU1498736A1 |
| RAW STOCK FOR MAKING LIGHT-WEIGHT CONCRETE | 0 |
|
SU1502533A1 |
| METHOD OF PRODUCTION OF SULFATE-SILICATE ADDITIVE FOR CEMENT | 2002 |
|
RU2233252C2 |
| METHOD OF RECYCLING SPENT ETCHING SOLUTIONS CONTAINING IRON (II) SULPHATES AND CHLORIDES | 2010 |
|
RU2428522C1 |
| METHOD OF PRODUCTION OF HIGH-EARLY-STRENGTH PORTLAND CEMENT AND METHOD OF PRODUCTION OF CONCRETE ON BASE OF THIS CEMENT | 2005 |
|
RU2304562C2 |
| CEMENT RAW MEAL, METHOD OF MANUFACTURING PORTLAND CEMENT WITH LOWERED SHRINKAGE FROM PORTLAND CEMENT CLINKER OBTAINED BY FIRE CAKING OF INDICATED RAW MEAL AND A METHOD FOR MANUFACTURING CEMENTING MATERIAL SUITABLE TO REPAIR CONCRETE AND TO STRENGTHEN GROUNDS BEING FINE FRACTION OF INDICATED PORTLAND CEMENT | 2002 |
|
RU2213070C1 |
