Công ty cổ phần xi măng Vicem Hà Tiên
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18006069
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VICEM HA TIEN LOW HEAT OF HYDRATION CEMENT is a fine powder mixture of various minerals. It is produced by mixing calcareous minerals such as limestone, clay containing silica and alumina and heating it to 1450 °C. When it cools, a clinker is formed. This clinker is then finely ground and mixed with blast furnace slag, gypsum and activated mineral additives with the appropriate rate of generating low heat of hydration cement meets requirements of TCVN 7712:2013.
USES
VICEM HA TIEN LOW HEAT OF HYDRATION CEMENT is specially blended to provide a lower heat of hydration in concrete. This unique attribute makes it ideal for mass concrete pours where the rate of temperature rise and the maximum temperature achieved must be controlled in order to reduce the risk of thermal cracking, such as constructing dams, large foundations, large footings,...
ADVANTAGES
PACKING
STANDARDS
VICEM HA TIEN LOW HEAT OF HYDRATION CEMENT PCBLH40 complies with TCVN 7712:2013 has physical and chemical properties as follows:
TCVN 7712:2013 - PCB40-LH
|
Stt/No.
|
Characteristic
|
Unit
|
Test method
|
Standard specification
|
Test result
|
|
Physical characteristic
|
|||||
|
1.
|
Fineness test
|
|
TCVN 4030:2003
|
|
|
|
Residue on sieve 0.09mm
|
%
|
|
≤ 10
|
0.1
|
|
|
Specific surface (Blain method)
|
cm2/g
|
|
≥ 2800
|
4695
|
|
|
2.
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Time of setting
|
|
TCVN 6017:2015
|
|
|
|
Initial set
|
minute
|
|
≥ 45
|
180
|
|
|
Final set
|
minute
|
|
≤ 420
|
205
|
|
|
3.
|
CCompressive strength
|
N/mm2
|
TCVN 6016:2011
|
|
|
|
3 days
|
|
|
≥ 18
|
24.9
|
|
|
28 days
|
|
|
≥ 40
|
53.1
|
|
|
4.
|
Độ ổn định thể tích / Soundness (Lechatelier method)
|
mm
|
TCVN 6017: 2015
|
≤ 10
|
0.5
|
|
5.
|
Độ giãn nở Autoclave / Autoclave expansion,
|
mm
|
TCVN 7711:2007
|
≤ 0.8
|
0.06
|
|
6.
|
Nhiệt thủy hóa / Heat of hydration
|
(KJ/Kg)
|
TCVN 6070:2007
|
|
|
|
7 ngày / 7 days
|
|
|
≤ 250
|
220
|
|
|
28 ngày / 28 days
|
|
|
≤ 290
|
275
|
|
|
7.
|
Khối lượng riêng / Mass Density
|
g/cm3
|
TCVN 4030:2003
|
-
|
3.0
|
|
Chỉ tiêu thành phần hóa / Chemical characteristic
|
|
|
|
|
|
|
8.
|
Hàm lượng SO3 / Sulfur trioxide content
|
%
|
TCVN 141 : 2008
|
≤ 3.5
|
2.25
|
