Difference between opc and ppc

This is about difference between OPC and ppc cement.
There are 15 differences.

2. The word PPC stands Definition The word OPC stands
for Pozzolana Portland for Ordinary Portland
Cement Cement

3. Pozzolana cement is

manufactured by .
mixing 30% of Material
pozzolana to Ordinary

Portland cement

clinkers.

Ordinary Portland
cement is a mixture of
limestone, raw
argillaceous, calcareous
materials and gypsum.

4. The pozzolana is a

material which is Composition
formed due to the

volcanic eruptions. It

is a siliceous

material having about

80% clay in it.

OPC comprises of
huge amount of
Limestone powder in
it

5. The main motto of
adding Pozzolana
Materials to OPC is
to enhance the
Durability of
Concrete

Durability

The durability of
concrete made by
OPC is less when
compared with PPC

6. The initial strength o

is less but for Initial Strength The initial strength
longer duration, the AFORO higher
strength of PPC is when Catnipated
comparatively with PPC which

higher than OPC makes effective for
9 construction

7. There are no such grades in
PPC, the strength of PPC
matches the OPC33 grade.
It is differentiated based on
type of pozzolanic material
added in OPC, the different
types of Pozollonic
materials are Fly ash,
Volcanic tuff, Rice Husk ash

Three different
grades OPC33,
OPC43, OPC53
grades of cement is
available in market

8. PPC is more eco friendlier
than OPC as the carbon
footprints generated by
manufacturing PPC is
less when compared with
OPC which reduces the
environmental pollution

Environmental OPC is an

Impact

ecofriendly product
where most of the
materials present in
cement is naturally
available

9. PPC has a slow
hydration process
due to which heat
generation is
comparatively
lower.

Heat of
Hydration

OPC generates
more heat after
mixing with the
water which makes
OPC is not suitable
for mass casting.

10. The price of PPC is . .
less which makes OPC is more costlier

the construction than PPC

economic.

11. PPC has a
fineness of
300m2/Kg so it
has lower
permeability with
higher durability

Permeability and. Lower the fineness ,

Fineness higher the
permeability. OPC
has a fineness of
225m2/kg

12. The volume of

mortar achieved / Volume of
by PPC is higher Mortar
than OPC as PPC

is less density

OPC
Volume of mortar
achieved is less
when compared
with the PPC as
OPC is less finer

13. PPC

As per IS 456:2000, the

minimum curing period Curing period
of any blended cement

(PPC) the minimum

curing period should not

be less than 10 days and

for hot conditions, 14

days is required.

As per IS456:2000 the
minimum curing period
should not be less than
7 days when exposed to
hot and extreme weather
conditions, the minimum
curing period should not
be less than 10days

14. PPC

The resistance
capacity of PPC
to chlorides,
sulfates etc is
high for PPC

OPC
The resistance of
Resistance to - Ordinary Portland
chemical attackscement to
chlorides, sulfates
is less

15. The initial setting
time of PPC is
30mins.

The final setting
time of PPC is
600mins

Setting time

OPC
Theinitial setting
time of OPC is
30mins

The final setting
time of OPC is
600mins

16. In]
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