CEMENT CEM I 42.5R-SR 3 ACCORDING TO 197-1 DATA SHEET
Cement is a binder, a finely ground inorganic material which, when mixed with water forms a paste that sets and hardens by means of hydration reactions and processes and, once hardened, retains its strength and stability even under water.
MAIN STANDARD COMPONENTS
- CLÍNKER (K) 95-100 %
- MINORITY COMPONENTS 0-5 %
STANDARDIZED CEMENT SPECIFICATIONS
- CHLORIDES <=0,10 %
- SULFATES <=3.5 %
- LOI <=5.0%
- INSOLUBLE RESIDUE <=5.0%
- SETTING START >=60 min
- EXPANSION <=10 mm
- RESISTANCE TO 2 DAYS >=20,0 MPa
- RESISTANCE TO 28 DAYS >= 42.5MPa <=62,5 MPa
It is a I cement type with 42.5R mechanical strength, low C3A content, that gives it the following characteristics:
- Minor chemical vulnerability to attacks from salt-like seawater or sulfates
- High compressive strengths at early ages and long-term
- A low surface area, allowing prepare concrete with lower water demand while maintaining the plasticity and reducing the risk of shrinkage.
Recommended for the production of:
- Reinforced concrete and dough for works in environments, water and aggressive lands due to salinity or sulfates.
- Pieces of concrete
- Dry compacted concrete
- All types of structural precast and prestressed
- Concrete with potentially reactive aggregate
- Marine works
Take care dosing, mixing and curing, especially in dry climates at elevated temperatures in order to avoid rapid drying that causes shrinkage.