CEM I 42,5 R
Properties:
- cement of high strength class with high initial strengths
Applications:
- it is suitable especially for extreme strength intensive structures, concretes of higher quality grades C 30/37 – C 45/55, prestressed concretes C 30/37 – C 35/45, reinforced concretes, concrete products, prefabricates and wherever rapid mould removal is needed within 24 hours
- it allows concreting even in cold and freezing environments, below the temperature of 5°C, where it can be processed using special additives
- due to the higher development of heat of hydration, it is not suitable for large-volume concreting
Method of delivery:
- bulk - road tankers, railway wagons of RAJ type
|
measuring |
required values |
Reached values in | ||
|---|---|---|---|---|
| Beginning of solidification: |
minute | min. 60 | 208 ± 22 | |
| Compression strength: |
2 days | N.mm-2 | min. 20 | 31,8 ± 1,9 |
| 28 days | N.mm-2 | min. 42,5 – max. 62,5 | 56,6 ± 2,2 | |
| Specific surface: | m2.kg-1 | not prescribed | 405 ± 23 |
Cement quality is supervised by TSÚS Bratislava. The quality management system is governed by the standard:
The cements manufactured conform:
EN 197-1 : 2000 - 06 Cement: Composition, specification and criteria for demonstrating the conformity of cements for general use
EN 197-2 : 2000 - 06 Cement: Demonstration of conformity