FIELD: chemistry.
SUBSTANCE: invention relates to the field of chemistry, in particular to substances used for the gunniting coal seams. The composition of the dry mixture for gunniting coal seams includes cement, sand of a dry fraction of 0-0.63 mm, calcium formate, superplasticizer, a redispersible polymer powder, a water-retaining additive, a shrinkage compensator, a hydrophobic additive at the following ratio, wt. %: cement 38.50 – 42.48, sand 46.60–52.74, calcium formate 3.50–5.47, superplasticizer 1.2–3.8, redispersible polymer powder 3.50–8.00, water-retaining additive 0.14–0.52, shrinkage compensator 0.33–0.50, hydrophobic additive 0.09–0.50.
EFFECT: ensuring air tightness and improved adhesion of concrete to coal seams.
7 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| WATERPROOFING COMPOUND FOR PROTECTION OF CONCRETE STRUCTURES | 2019 |
|
RU2724838C1 |
| DRY MIXTURE FOR LEVELING OF VESSELS DECKS | 2018 |
|
RU2689959C1 |
| DRY BUILDING MIXTURE | 2004 |
|
RU2267466C1 |
| WATERPROOFING COMPOSITION FOR REPAIR, PROTECTION AND RESTORATION OF CONCRETE STRUCTURES | 2019 |
|
RU2732547C1 |
| CONCRETE MIXTURE COMPOSITION FOR PRODUCING HIGH-STRENGTH SHOTCRETE BY WET-MIX METHOD | 2016 |
|
RU2658076C2 |
| LIGHTWEIGHT DRY MASONRY MIXTURE | 2015 |
|
RU2586354C1 |
| GROUTING MORTAR FOR CEMENTING GAS-OIL WELLS | 2006 |
|
RU2306327C1 |
| DRY CONSTRUCTION MIXTURE AND SOLID-PHASE COMPOSITION FOR ITS PRODUCTION | 2018 |
|
RU2681158C1 |
| METHOD OF MANUFACTURE OF BUILDING MATERIALS ON BASE OF MAGNESIAL BINDER | 2002 |
|
RU2222508C1 |
| DRY CONSTRUCTION MIXTURE | 2012 |
|
RU2499777C2 |
