مؤسسة الإسمنت و مشتقاته بالشلف

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

CEM I 42.5 N- SR5

CEM I 42.5 N- SR5

CEM I 42.5 N- SR5

CEM I 42.5 N- SR5

Portland Cement Sulphate Resistant NA 442/2013

Def:

Is a gray sulphate resistant cement containing 95% low calcium aluminate (C3A) clinker and 5% gypsum as a setting regulator.

AREA OF USE  :

– civil engineering work in an aggressive environment.

– Concrete work requiring low heat of hydration and better durability.

– maritime and hydraulic works.

-desalination and purification stations

– dams .

TECHNICAL CHARACTERISTICS :

1. Mineralogical composition of CRS –SR5 clinker:

                                  C3A ≤ 5%

• Chemical analyzes:

 * Sulphates (SO3) ≤ 3% * loss on ignition ≤5%

            * Chlorides cl ≤ 0.1% * magnesium oxide MgO ≤3%

            * Insolubles ≤ 5%

• Physical tests:

     * Mechanical resistance to compression:

• 02 days ≥10 MPa

• 28 days ≥42.5 MPa

  * Normal consistency: 26 – 30%

  * start of setting> 60 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