FIELD: building material industry, in particular noncontracting, corrosion-resistant portlandcement binder.
SUBSTANCE: method includes intergrinding of Portlandcement clinker with plaster stone and superplasticizer using active mineral additive. Modified plaster-mineral stone obtained by mixing of raw hemihydrate plaster with active mineral additive at ratio of 1:1-1:1.5 and tempering with surfactant of concentration 0.05-2.5 % is used as plaster stone. After hardening and drying of plaster stone intergrinding is carried out up to specific surface of 280-550 m2/kg (in one embodiment of invention up to 280-350 m2/kg). Modified lignosulfonates, sulfated melamine- or naphthalene formaldehyde resins are used as surfactant.
EFFECT: noncontracting concrete operated under high humidity, concrete and reinforced concrete products with increased durability and sulfate-resistance.
6 cl, 3 ex, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCTION OF BINARY PLASTICIZED PORTLAND CEMENT BINDERS | 2004 |
|
RU2303010C2 |
| EXPANSION ADDITIVE, HYDRAULIC BINDER WITH INDICATED ADDITIVE, AND A METHOD FOR PREPARATION THEREOF | 2002 |
|
RU2211194C1 |
| METHOD OF PRODUCING EXPANDING CEMENT MIXTURE | 2018 |
|
RU2694653C1 |
| METHOD FOR PRODUCTION OF BINDER | 1990 |
|
RU2070172C1 |
| HYDRAULIC CEMENT | 1996 |
|
RU2096364C1 |
| CEMENT PRODUCTION METHOD | 2007 |
|
RU2371405C2 |
| METHOD OF PRODUCING CEMENT WITH MINERAL ADDITIVE | 2007 |
|
RU2371402C2 |
| BINDING AGENT | 1995 |
|
RU2096362C1 |
| METHOD OF PRODUCING BUILDING MATERIALS WITH HIGH PHYSICAL-MECHANICAL AND WATER-FROST-RESISTANT PROPERTIES | 2015 |
|
RU2681720C2 |
| ADDITIVE LOWERING SHRINKAGE AND IMPARTING DIMENSIONAL STABILITY TO HARDENING CEMENT-WATER SYSTEMS AND ITS APPLICATION METHOD | 2002 |
|
RU2225375C2 |
