مؤسسة الإسمنت و مشتقاته بالشلف

Ech-cheliff Cements and Derivatives Company
« E.C.D.E »

CEM I 52.5 N

CEM I 52.5 N

CEM I 52.5 N

CEM I 52.5 N

High strength Portland cement NA 442/2013

Def:

Is a gray cement, containing 95% C3S ordinary clinker ≥ 60% and 5% gypsum as a setting regulator.

AREA OF USE  :

– major works requiring high resistance.

– Concrete work requiring short form stripping times and better durability.

– prefabricated works.

-buildings and works of art.

– concreting in cold weather.

TECHNICAL CHARACTERISTICS :

1. Mineralogical composition of clinker:

    C3S ≥ 60%

• Chemical analyzes:

   * Sulphates (SO3) ≤ 4%

   * Loss on ignition ≤5%

              * Chlorides cl ≤0.1%

              * magnesium oxide MgO ≤3%

              * Insolubles ≤ 5%

• Physical tests:

• * Mechanical resistance to compression:

• 02 days ≥20 MPa

• 28 days ≥52.5 MPa

   * Normal consistency: 28.0%

  * Start of setting> 45 min

  * Lime expansion ≤10 mm

  * End of setting> 250 min

             * Refusal on a 45 µm sieve: 8-12%

             * Heat of hydration at 41 h ≤270 d / g

  * specific surface of Blaine ≥3500 cm2 / g