Quality
The quality of cements is supervised by the TSÚS (Building Testing and Research Institute), Bratislava.
CEMMAC is a holder of an ISO 9001: 2008 quality management certificate and an ISO 14001: 2004 environmental management certificate.
The content of tricalcium aluminate in this cement is less than 5%.
Portland-slag cement
Quick-setting cement suitable for the production of high-strength concrete and for structures or concrete elements requiring a rapid increase in early strengths. The higher development of heat of hydration also predetermines it to concreting at lower ambient temperatures.
Characteristics
CEM II / B-S 42,5R is a cement produced by fine grinding of Portland clinker, granulated blast-furnace slag (6 – 20% according to EN 197-1) and gypsum. It attains 2-day strengths ranging from 25 to 29 MPa and standard 28-day strengths of 55 to 59 MPa.
Use
- concretes for difficult concrete structures
- concrete elements and structures requiring a rapid increase in early strengths
- prefabricated concrete elements and construction components (paving, permanent shuttering, kerbs, …)
- industrial floors
- external hard surfaces made of concrete
- plain concrete and reinforced concrete even of higher strength classes
- cement screeds
Advantages
- a rapid increase in early strength and high final strengths
- very good workability and soundness
- higher development of heat of hydration
- moderate resistance to chemical aggression (up to the XA1 environment)
Essential properties | Harmonized Standard EN 197-1 |
CEMMAC CEM II/A-S 42,5R |
2-day compressive strength (MPa) | => 20 | 25 – 29 |
28-day compressive strength (MPa) | => 42,5 =< 62,5 | 55 – 59 |
Initial setting time (min) | => 60 | 160 – 200 |
Volume stability (expansion) – Le-Chatelier (mm) | =< 10 | 0,0 – 1,0 |
SO3 sulphate content (%) | =< 4 | 2,7 – 2,9 |
Chloride content (%) | =< 0,10 | 0,02 – 0,09 |
Documents for download |
Technical sheet SUPER 42,5 R |
Safety Data Sheet |