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Home > Products > Cements > Ordinary Portland Cement

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Portland Cement Type

Types 2, 3 and 5

Portland Cement Type I

 

Chemical specification of Portland cement type I


Standard

So2

Al2o3

Fe2o3

Cao

Mgo

So3

Cl

Ins.Res

L.O.I

Na2O+0.658k20

F. Cao

ASTM

 

 

 

 

<6

<3.5

 

<0.75

<3

 

%

ISIRI

 

 

 

 

<5

<3.5

 

<0.75

<3

 

 

F.R.S Co. Cement

21.2-.21.6

5.40-5.90

3.20-3.45

63.8-64.5

2.0-2.5

1.4-2.0

<0.04

0.40-0.65

0.6-1.2

0.8-1.0

1.0-1.8

 

 


 

 

 

 



Physical specification of Portland cement type I


Standard

Blaine

Autoclave Expansion

Setting    time

Compressive  Strength   Kg/cm2

Heat of cal/gr.   hydration

 

Cm2/g

%

Final (Min)

Final (Min)

3days

7Days

28days

7Days

28days

ASTM

>2800

<0.8

>45

<375

>128

>197

 

 

 

ISIRI

>2800

<0.8

>45

<360

>120

>200

>330

 

 

F.R.S Co. Cement

2850-3000

0.1-0.2

90-110

130-180

180-220

290-330

>400-450

68-78

80-90

 

 


 

 

“Portland Cement History and its Development”

“Portland Cement History and its Development” Portland cement, definitely one of mankind’s most important manufactured materials, was invented and patented by Joseph Aspdin from Leeds in 1824. Aspdin produced cement by heating powdered limestone mixed with clay in a furnace, and grinding the resulting clinker to form it to powder. He called the product “Portland Cement” because of its similarity, when set, to Portland stone, a type of stone quarried on the Isle of Portland. Aspdin’s cement was improved in 1843 by his son William, by strong heating and using better grinding equipment to handle the hard clinker. Until nowadays, Portland cement is still the most commonly used cement around the world.