I. CEMENT STANDARD
1.Vietnam standard (TCVN)
- Quality of Cement as per TCVN 6260 - 2009
2. European standards (EN)
- Certificate I -EN 197-1.2000- CEM II 42,5 R
- Certificate II - En 197-1.2000 CEM II 42,5N
- Certificate III - EN 197-1.2000 CEM I 42,5R
3. American standards (ASTM)
- ASTM C150 TYPE-1
- ASTM C1157 TYPE- GU
- ASTM C1157 TYPE- HE
II. SPECIFICATIONS FOR ORIDINARY PORTLAND CEMENT AS PER EN 197-1:2011/CEM I 42.5
|
Items
|
Units
|
Specification
|
Test Results
|
Test Method
|
|
SiO2
|
%
|
≤ 26.00
|
23.41
|
EN 196-2
|
|
Al2O3
|
%
|
≤ 6.50
|
5.50
|
|
Fe2O3
|
%
|
≤ 4.50
|
3.60
|
|
CaO
|
%
|
≥ 54.00
|
57.00
|
|
MgO
|
%
|
≤ 5.00
|
2.75
|
|
SO3
|
%
|
≤ 3.5
|
2.56
|
|
Loss on Ignition, (LOI)
|
%
|
≤ 10.00
|
7.00
|
|
Insoluble Residue
|
%
|
≤ 12
|
6.00
|
|
Physical and Mechanical Properties
|
|
Finess test
|
|
|
|
EN 196-6
|
|
- Blaine
|
cm2/g
|
≥ 3200
|
3800
|
|
- Retained content on sieve 75mm
|
%
|
< 15.0
|
0.10
|
|
Time of setting
- Initial set
- Final set
|
Minutes
|
≥ 75
< 420
|
145
200
|
EN 196-3
|
|
Soundness (LeChatelier)
|
mm
|
< 10.0
|
1.0
|
EN 196-3
|
|
Compressive strength
|
MPa
|
|
|
EN 196-1
|
|
2 Days
|
≥ 20.0
|
23.0
|
|
3 Days
|
-
|
27.0
|
|
7 Days
|
-
|
37.0
|
|
28 Days
|
≥ 42.5
|
50.0
|