CEM I 42,5 R

Cimento constituído por mais de 95% de clínquer. Indicado para variadas aplicações: argamassas industriais, betão armado e pré-esforçado, caldas de injeção e fibrocimento. De uso generalizado em obras subterrâneas e trabalhos de geotecnia. Particularmente adequado para ambientes que induzam carbonatação.

Clinker ≥ 95%;
Additional minor constituents ≤ 5%;
Calcium sulfate as setting regulator.

• Chemical
  • Loss on ignition ≤ 5,0%;
  • Insoluble residue ≤ 5,0%;
  • Sulfate content (SO₃) ≤ 4,0%;
  • Chloride content (Cl^-) ≤ 0,10%;
• Physical
  • Initial setting time ≥ 60 min;
    Soundness ≤10 mm.
• Mechanical
  • Compressive strength
  • Minimum values
  • 2 days: 20,0 MPa;
  • 28 days: 42,5 MPa.

• Reinforced concrete
  • All strength classes, especially those in the range of C30/37 to C45/55;
  • High performance at 28 days;
• Precast concrete products
  • Reinforced and pre-stressed concrete structural elements;
• Road pavements
  • Concrete surface layers for high traffic roads;
• General purpose grout.

Minimum growth curve

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• High early strength development;
• High strength at all standard ages;
• Particularly suitable for environmental exposure class XC.

• Attend the standard minimum cement content and maximum water/cement ratio;

• Provide adequate protection and cure according to corresponding standards;

• Keep framework and scaffolding in place until required strength is obtained;

• Ready-mix concrete: avoid long time transportation;

• Hot and dry weather placing.

• Aggressive environments – water and soils;
• Mass concrete;
• General purpose mortars.

• Wear proper protective clothing, gloves and eye/face protection equipment;
• When bagged it contains Chromium (VI) reducing agent. Its expiration date is two months after the bagging date, as long as the storage conditions stated in the bag are respected;
• For more information, check the Safety Data Sheet, available at www.cimpor.com