Portland Composite Cement

Main Constituents

65% < Clinker < 79%

21% < Natural calcined

pozzolana + Limestone < 35%

Setting time regulating calcium sulfate

Characteristics

Chemistry

Sulfate Content (SO3) < 3.5%

Chloride Content (CI) < 0.10%

Physical

Initial Setting Time (mins) > 60

Soundness (mm) < 10

Mechanics

Compressive strength

Minimum values for 2 days: 10.0 MPa

28 days: 42.5 MPa < 28 days < 62.5 MPa

Special properties of concrete manufactured using this cement

• Concrete requiring lower heat of hydration
• High strength for up to 28 days.
• Wide range of uses and good performance even in moderately aggressive environments.
• High workability
• Particularly suitable for XC Exposure Classes

Recommended uses

• Reinforced concrete indistinctly indicated for all resistance classes, with advantage given to those from C20/25 to C40/50.
• Prefabrication of masonry blocks and domes in lightweight concrete artefacts. 
• Base and sub-base layers for road pavement in poor concrete Soil cement Wear layers
• Simple concrete for general use and injection syrups for general use 
• Mass concrete
• All kinds of mortar

Environment and Safety

• Wear suitable protective clothing, gloves, and eye/face protection.
• The production of this cement accounts for a decrease in CO2 emissions into the atmosphere.
• For more information, consult the Safety Data Sheet, available at www.cimpor-portugal.pt

Precautions in application

• Respect the minimum cement dosages and the maximum normative water/cement ratios.
• Ensure an adequate cure and protection according to the normative provisions.
• Do not remove formwork or shoring before the concrete is sufficiently solid.
• For aggressive environments, follow the normative recommendations and technical texts on the subject strictly.

Contraindications

• Concrete requiring quick strength.
• Concrete under low temperatures.