Certificate of quality (III)
Portland cement (PC 40) or en 197-1:2000/CEM I 42.5N/R
Lo¹i xi m¨ng/cement : PC 40
Tiªu chuÈn ¸p dông/Standard : TCVN 2682:2009
Sè l«/Lot number : Tpc2/12
Ngµy s¶n xuÊt/Date of production : 11-15/12/2012
Ngµy thö nghiÖm/Date of testing : 17/12/2012
TT
|
tªn chØ tiªu
(Characteristics)
|
§VT
(Unit)
|
Yªu cÇu theo (requirements in accordance with)
|
Ph¬ng ph¸p thö (test method)
|
kÕt qu¶ thö
(results)
|
1
|
MgO
|
%
|
≤ 5,0
|
TCVN 141-2008
|
1,73
|
2
|
SO3
|
%
|
≤ 3,5
|
TCVN 141-2008
|
2,91
|
3
|
KiÒm quy ®æi (Alkalies) Na2Ot®
|
%
|
Kh«ng quy ®Þnh
|
TCVN 141-2008
|
...
|
4
|
Loss on Ignition, (LOI)
|
%
|
≤ 3,0
|
TCVN 141-2008
|
1,15
|
5
|
Insoluble Residue (IR)
|
%
|
≤ 1,6
|
TCVN 141-2008
|
0,72
|
6
|
BÒ mÆt riªng (Specific surface)
|
cm2/g
|
≥2800
|
TCVN 4030-2003
|
3301
|
7
|
Cêng ®é chÞu nÐn (compressive strength)
- 03 ngµy (3 days)
- 28 ngµy (28 days)
|
MPa
|
≥ 21
≥ 40
|
TCVN 6016-2001
|
31,2
58,5
|
8
|
§é nghiÒn mÞn (Fineness)
PhÇn cßn l¹i trªn sµng 0.09mm
|
%
|
≤ 10
|
TCVN 4030-2003
|
2,80
|
9
|
Thêi gian ®«ng kÕt (Setting time)
- B¾t ®Çu ( Initial Setting Time)
- KÕt thóc (Final Setting Time)
|
Phót/min
|
≥ 45
≤ 375
|
TCVN 6017-1995
|
140
200
|
10
|
§é dÎo tiªu chuÈn
(Standard plasticity)
|
%
|
Kh«ng quy ®Þnh
|
TCVN 6017-1995
|
26,80
|
11
|
§é æn ®Þnh thÓ tÝch Le Chartelier
(Soudness)
|
mm
|
≤ 10
|
TCVN 6017-1995
|
1,00
|
12
|
Hµm lîng Clo/Chloride conten
|
%
|
-
|
TCVN 141-2008
|
0,002
|
13
|
§é në chng hÊp/Autoclave expansion
|
%
|
≤ 8,0
|
TCVN 8877-2011
|
0,42
|
Ghi chó/Note: The remaining indicators are rechecked cement quality PC 40 according to the TCVN 6282:2009 similar ASTM similar EN 197-1:2000/CEM I.
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