Info Tabs

 

 

British Standard

 

 

I

Specification: Grey Portland cement for Construction Grade 42.5, according to British Standards.

Chemical Composition

 
Silicon Dioxide (SIO2) 21.00
Aluminium Oxide (A1203) 05.50
Ferric Oxide (FE203) 03.30
Calcium Oxide (CAO) 65.60
Magnesium Oxide (MGO) 01.40
Sulphur Trioxide (SO3) 02.70
Loss of Ignition (LOI) 01.40
Tri calcium Silicate (C3S) 60.00
Dicalcium Aluminate (C2S) 15.00
Tricalcium Aluminate (C3A) 08.05
Tricalicium Alumino Ferrice (C4AF) 09.76
   

Physical and Mechanical Properties

 
Blain CM2/GR 3.250
Autoclave Expantion 0.02
Initial Setting Time (VICAT) 105 minutes
   

Compressive Strength

 
@ 03 Days 230 KG/CM2  
@ 07 Days 305 KG/CM2  
@ 28 Days 420 KG/CM2