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Portland cement is made of quality material that makes it recommended for building commercial and residential building . It is also suitable for construction of pavements , Briges, roads, highways, airstrips and others
Portland cement is made of quality material that makes it recommended for building commercial and residential building . It is also suitable for construction of pavements , Briges, roads, highways, airstrips and others
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
Items |
CHARACTERISTICS |
Units |
SPECIFICATION LIMIT |
TEST RESULT |
TEST METHODS |
ASTM C150-TYPE I |
|||||
1 |
SiO2 |
% |
22 max |
20.26 |
ASTMC114 |
2 |
Al2O3 |
% |
- |
5.16 |
|
3 |
Fe2O3 |
% |
- |
3.18 |
|
4 |
CaO |
% |
60 min |
63.28 |
|
5 |
MgO |
% |
6 max |
1.05 |
|
6 |
SO3 |
% |
3 max |
2.55 |
|
7 |
Loss on Ignition, (LOI) |
% |
3 max |
2.71 |
|
8 |
Insoluble Residue |
% |
0.75 max |
0.69 |
|
9 |
Chloride conten |
% |
A |
- |
|
10 |
Total Alkali Na2Ot®= Na2O + 0.658 K2O |
% |
0.75 max |
0.55 |
|
11 |
C3S |
% |
A |
|
BY |
12 |
C2S |
% |
A |
|
|
13 |
C3A |
% |
A |
|
|
14 |
C4AF |
% |
A |
|
|
15 |
Specific surface or Blaine |
cm2/g |
3200 min |
3537 |
ASTM C204 |
16 |
Retained content on sieve 45mm |
% |
A |
|
ASTM C430 |
17 |
Setting time |
|
|
|
|
18 |
- Initial Setting Time |
Minute |
45 min |
125 |
ASTMC191 |
19 |
- Final Setting Time |
Minute |
375 max |
185 |
|
20 |
Heat of hydration: |
|
|
|
|
21 |
7 Days |
KJ/kg |
A |
|
ASTM C 186 |
22 |
28 Days |
KJ/kg |
A |
|
ASTM C 186 |
23 |
Mass density |
g/cm |
A |
|
ASTM C 188 |
24 |
Sulfate resistance, 14 days expansion |
% |
A |
|
ASTM C 452 |
25 |
Air content of mortar |
% |
≤ 12.0 |
|
ASTM C 185 |
26 |
Autoclave expansion |
% |
< 0.80 |
|
ASTM C 151 |
27 |
Compressive strength |
|
|
|
|
28 |
- 3 days |
MPa |
12 min |
16.8 |
ASTMC109 |
29 |
- 7 days |
19 min |
25.3 |
||
30 |
- 28 days |
28 min |
37.2 |
||
31 |
Fineness |
|
|
|
|
32 |
Retained content on sieve 0.09mm |
% |
3 max |
0.12 |
ASTM C430 |
33 |
Chloride content |
% |
0.1 max |
0.04 |
ASTMC114 |
34 |
CaO free |
% |
1.5 max |
0.65 |
ASTMC114 |
SPECIFICATIONS FOR ORIDINARY PORTLAND CEMENT AS PER EN 197-1:2011/CEM I 42.5 |
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|
|
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|
Items |
CHARACTERISTICS |
Units |
SPECIFICATION LIMIT |
TEST RESULT |
TEST METHODS |
|
1 |
SiO2 |
% |
≤ 26.00 |
23.41 |
EN 196-2 |
|
2 |
Al2O3 |
% |
≤ 6.50 |
5.5 |
||
3 |
Fe2O3 |
% |
≤ 4.50 |
3.6 |
||
4 |
CaO |
% |
≥ 54.00 |
57 |
||
5 |
MgO |
% |
≤ 5.00 |
2.75 |
||
6 |
SO3 |
% |
≤ 3.5 |
2.56 |
||
7 |
Loss on Ignition, (LOI) |
% |
≤ 10.00 |
7.00 |
||
8 |
Insoluble Residue |
% |
≤ 12.00 |
6.00 |
||
|
Physical and Mechanical Properties |
|||||
|
Finess test |
|
|
|
|
|
1 |
Blaine |
cm2/g |
≥ 3200 |
3800 |
EN 196-6 |
|
2 |
Retained content on sieve 75mm |
% |
< 15.0 |
0.1 |
||
|
Time of setting |
|
|
|
|
|
1 |
Initial set |
Minutes |
≥ 75 |
145 |
EN 196-3 |
|
2 |
Final set |
Minutes |
< 420 |
200 |
||
3 |
Soundness (LeChatelier) |
mm |
< 10.0 |
1.0 |
EN 196-3 |
|
|
Compressive strength |
|
|
|
|
|
1 |
2 Days |
MPa |
≥ 20.0 |
23.0 |
EN 196-1 |
|
2 |
3 Days |
MPa |
|
27.0 |
||
3 |
7 Days |
MPa |
|
37.0 |
||
4 |
28 Days |
MPa |
≥ 42.5 |
50.0 |
Note :
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