Ordinary Portland Cement in bulk

According to the American Standard Specification for Portland Cement Type I ASTM C 150

Guarantee

Specification

1. Chemical Requirements

ASTM C 114

Silicon dioxide

(SiO₂)

%

-

Aluminium oxide

(Al2O₃)

%

-

Ferric oxide

(Fe₂O₃)

%

-

Calcium oxide

(CaO)

%

-

Magnesium oxide

(MgO)

%

Max 6.0

Sulfur trioxide

(SO₃)

%

Max 3.5

Loss on ignition

(LOI)

%

Max 3.0

Insoluble residue

(IR)

%

Max 0.75

Tricalcium silicate

(C₃S)

%

-

Tricalcium aluminate

(C₃A)

%

-

* Total Alkalies (Na2O + 0.658K2O)

%

Max 0.80

1. Physical Requirements

Fineness, Specific Surface Air permeability test

ASTM C 204

M2/kg

Min 280

Soundness: Autoclave expansion

ASTM C 151

%

Max 0.8

Time of setting, Vicat test;

ASTM C 191

Initial set

Mins

Min 45

Final set

Mins

Max 375

Air content of mortar volume

ASTM C 185

%

Max 12

* False set

ASTM C 451

%

Min 50

Compressive strength, Mortar cubes;

ASTM C 109

(Mpa)

1 day

Min -

3 days

Min (16.5)

7 days

Min (25.0)

*           28 days

Min  (35.0)