CEM l 42,5 R
Portland cement
High-strength pure Portland cement for concretes requiring the highest strengths and a fast form removal or load of the structure, also suitable for concreting in cool weather.
Cement for highest loads and structures subject to stress
CEM I 42,5 R is characterized by a rapid increase in strengths, attaining high early and final
strengths (after 2 days in the range of 28 to 32 MPa, after 28 days from 59 to 62 MPa). During hardening, this manifests itself by a high development of heat of hydration.
| Essential properties | Standard EN 197-1 | CEMMAC CEM I 42,5 R |
|---|---|---|
| 2-day compressive strength (MPa) | ≥ 20 | 28 - 32 |
| 28-day compressive strength (MPa) | ≥ 42,5 ≤ 62,5 | 59 - 62 |
| Initial setting time (min) | ≥ 60 | 200 ± 30 |
| Volume stability (expansion) – Le-Chatelier (mm) | ≤ 10 | 0,0 – 2,0 |
| SO₃ sulphate content (%) | ≤ 4,0 | 2,6 - 3,0 |
| Chloride content (%) | ≤ 0,1 | 0,02 – 0,09 |
- concretes of high strength classes and concretes where fast demolding is required
- demanding structures made of reinforced concrete and plain concrete (bridge structures, pillars, etc.)
- production of prefabricated elements and ready-mixed plasters
- concrete pavements and concrete surfaces subject to high stress
- industrial floors
- all kinds of industrial and civil structures
- the rapid increase in early strengths enables a
- quick demolding of products
- quick walk-on-ability of concrete surfaces
- quick load of the concretes produced
- high early and final compressive strengths
- good workability, colour fastness and low volume changes
- the high development of heat of hydration enables concreting even in cool weather
The quality of cements is supervised by TSÚS Bratislava. CEMMAC holds an ISO 9001:2008 Quality Management certificate and an ISO 14001:2004 Environmental Management certificate.