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  Cement : Specifications Cement 42,5  
 

GREY PORTLAND CEMENT FOR CONSTRUCTION GRADE 42.5 ACCORDING TO BRITISH AND SABS STANDARDS DIN EN 197-1/2000 OR ASTM C 150

Chemical Composition

  • SILICON DIOXIDE (SIO2)20.08 - 21.50
  • ALUMINIUM OXIDE (A12O3) 5.30
  • FERRIC OXIDE (FE2O3) 3.25 3.50
  • CALCIUM OXIDE (CAO) 65.60
  • MAGNESIUM OXIDE (MGO) 1.70 3.00
  • SULPHUR TRIOXIDE (SO3) 2.70 3.00
  • LOSS OF IGNITION (LOI) 1.80 3.00
  • INSOLUBLE RESIDUE % 0.1 0.7
  • TRICALCIUM SILICATE (C3S) 50.00 54.40
  • DICALCIUM SILICATE (C2S) 14.2 18.20
  • TRICALCIUM ALUMINATE (C3A) 6.00 6.80
  • TRICALCIUM ALUMINO FERRICE (C4AF) 11.60
  • CHROMIUM (CR%) 2.0 MAX

Physical and Mechanical Properties

  • BLAIN CM2/GR 3.250
  • AUTOCLAVE EXPANTION 0.02
  • NORMAL CONSISTENCY % 27.5
  • INITIAL SETTING TIME (VICAT)(HOURS-MINS) 3.25-4.50
  • HARD SET (HOURS-MINS) 4.54 6.00
  • FITNESS INDEX (CM2/GM) 2800-3040
  • COMPRESSIVE STRENGTH ISO/EN 197-1/2000 BS 4550 MORTAR
  • @ 03 DAYS 2.65 34.2 KG/CM2
  • @ 07 DAYS 37.3 42.5 KG/CM2
  • @ 28 DAYS 52.8 54.6 KG/CM2

Chemical Analysis Norm Fact
Selica (SIO2)   20,840
Aluminia (AI2O3)   4,460
Ferric Oxide (FE2O3)   4,130
Lime (CaO)   65,210
Magnesia (MgO) 4,0 0,780
Sulphic Anhydrid (SO3)   2,640
Mass part of Chloride 0,1 0,003
Insolube Residue 1,5 0,160
Looses on Ignition 3,0 0,650
Calcium Oxide (K2O)   0,690
Natrium Oxide (Na2O)   0,400
Tri-Calciu Aluminate   4,800

Clinker Specification

PHYSICAL-MECHANICAL TESTS
Compressive Strength (n/mm2)

 Age Days Mortar
Norm
Mortar
Fact
2 >10,0 23,4
7    
28 >42,5< 62,5  
Setting Time    
Initial 155 min  
Final 245 min  

SPECIFICATIONS CEMENT 32.5

Detailed Product Description
32.5 Portland cement

  1. Grade: P.O.32.5
  2. LOI: 5.0% max.
  3. SO3: 3.5% max.
  4. Mgo: 5.0% max.
  5. Cement fineness: 10.0% max.
  6. Initial setting time: 45 min.
  7. Final setting time: 600 min.
  8. 3-day bending strength: 3.5MPa min.
  9. 3-day compressive strength: 16.0MPa min.
  10. 28-day bending strength: 5.5MPa min.
  11. 28-day bending strength: 32.5MPa min.

P.C 32.5R Portland cement

  1. Grade: P.C.32.5R
  2. SO3: 3.5% max.
  3. Cement fineness: 10.0% max.
  4. Initial setting time: 45 min.
  5. Final setting time : 600 min.
  6. 3-day bending strength: 3.5MPa min.
  7. 3-day compressive strength: 16.0Mpa min.
  8. 28-day bending strength : 5.5Mpa min.
  9. 28-day bending strength : 32.5Mpa min.

SPECIFICATIONS CEMENT 52,5 R

STANDARDS
SPECIFICATION: CONFIRM TO ASTM C150 TYPE I / 52,5 R GERMAN
STANDARD DIN EN 196)/ CEM- I

  • ** (SiO2) 20.50
  • ** (Al2O3) 4.60
  • ** (Fe2O3) 3.20
  • ** (CaO) 62.90
  • ** (MgO) 3.30
  • ** (SO3) 2.70
  • ** (Na2O) 0.11
  • ** (K3O) 0.71
  • ** (LOI) 1.30
  • ** (C2S) 16.00
  • * (C3S) 57.00
  • ** (C3A) 6.08
  • ** (C4AF) 9.70
  • ** FREE (CaO) 0.90
  • ** Fe & Al 2.30
  • **Al Oxides/Fe Oxides 1.40
  • ** TOTAL OXIDES 98.00

 
 
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