VIET NAM CLINKER CPC50

Nos

Contents

Clinker cement according to VietNamese Standard TCVN 7024:2002

I

Chemical Compositions

1

SiO₂

%

18 ÷ 26

2

Al₂O₃

%

3 ÷ 8

3

Fe₂O₃

%

2 ÷ 5

4

CaO

%

58 ÷ 67

5

MgO

% Max

≤ 5

6

SO3

% Max

≤ 1

7

Loss of Ignition

% Max

≤ 1.0

8

Insoluble Residue

%

≤ 0.75

9

Free lime content CaO

% Max

≤ 1.5

10

Free Na₂O = Na₂O + 0,658K₂O

% Max

≤ 1.0

11

Moisture

%

≤ 1.0

12

C₃S

%

60 ÷ 65%

13

C₂S

%

15 ÷ 20%

14

C₃A

%

7 ÷ 12

15

C₄AF

%

7 ÷ 12

II

Compressive Strength

1

After 3 days ± 45 Minutes

(Mpa) N/mm²

≥ 25

2

After 28 days ± 02 hours

(Mpa) N/mm²

≥ 50

III

Other conditions

Colour

Grey Dark

1

Grain Size :   1mm not more than

%

≤ 10

2

Grain Size :   ≥ 5mm and ≤  25mm

mm

≥ 50

3

Grinding Rate, not more than

≥1,2