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Normal Portland cement
Uses: used in building
Standard: GB175-1999
Technical index:
1, Loss on dry <5.0%
2, Magnesia:<5.0% or 6 (passed press-steam test)
3, Sulphur trioxide:<3.5%
4, Finess on 80
screen <10%
5, solidify time:initial time> 45min,final time<10h
6, invariability:must passed the boiling test
7, Strength:no less than following form
8, alkali:according to Na2O+0.625K2O,
the low alakli or orthopaedics standard < 0.60% or following
the customers' demand
Product
|
strength
|
compressive
strength
|
folding
strength
|
3 days |
28 days |
3 days |
28 days |
common
cement
|
32.5 |
11.0 |
32.5 |
2.5 |
5.5 |
32.5R |
16.0 |
32.5 |
3.5 |
5.5 |
42.5 |
16.0 |
42.5 |
3.5 |
6.5 |
42.5R |
21.0 |
42.5 |
4.0 |
6.5 |
52.5 |
22.0 |
52.5 |
4.0 |
7.0 |
52.5R |
26.0 |
52.5 |
5.0 |
7.0 |
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Copyright(C)2003,GANSU JINSHI CHEMICAL CO.,LTD.(MINLE CHEMICAL PLANT). All Rights Reserved
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