Compressive Strength

PPC as per IS 1489 (Part-1): 1991

Birla Shakti

3 days Mpa

Min 16 Mpa

27 – 30

7 days Mpa

Min 22 Mpa

36 – 40

28 days Mpa

Min 33 Mpa

50 – 54

Technical Comparision of Birla Shakti
 with BIS Standards

Physical Characteristics of PPC

as per IS 1489 (Part-1): 1991

Birla Shakti

Setting time (minutes)
a)      Initial
b)      Final

 
Min. 30
Max. 600

 
130 – 180
220 – 280

Fineness M²/Kg

Min 300

360 – 380

Soundness
a)      Le-chat Exp (MM)
b)      Auto Clave Exp. (%)
c)      Drying Shrinkage (%)

 
Max. 10.0
Max. 0.80
Max. 0.15

 
Max. 1.0
Max. 0.15
Max. 0.05

Technical Comparision of Birla Shakti
 with BIS Standards

Chemical Characteristics of PPC

IS 1489
(Part-1): 1991

Birla Shakti

Loss on Ignition ( % by Mass)

Max 5.0

Max 3.5

Insoluble residue (% by Mass)

*Max X + 4.0 (100-X)/100

Depending on X

Magnesia (% by Mass)

Max 6.0

Max 1.5

Sulphuric Anhydride (% by Mass)
Chlorides (% by Mass)

Max. 3.0
 
Max. 0.05

Max 2.5  

Max. 0.02

* Where ‘X’ is declared percentage of Fly Ash Pozzolana