Low alkalinity Sulphoaluminate Cement 42.5

الوصف

Low alkalinity Sulphoaluminate Cement *2.5 

It is obtained by grinding sulphoaluminate cement clinker, consisting of essentially anhydrous calcium sulphoaluminate. Suitable gypsum shall be blended with clinker during manufacture of low-alkalinity cement. The product has low alkalinity and small free expansion property. It is the best cement to produce GRC products and have a good compatible with fiber. The code no is L-SAC.
The strength grade depends on its7 days compressive strength. 
The product achieved a class second provincial prize of excellent new product, a class third provincial prize of improvement science and technology.

It is one of important new product of state. The item code is *8G**1F******9.

Main specifications

1.      Specific surface area: ≥**0㎡/kg.

2.      Setting time:

Initial setting time: ≥*5 min.
Final setting time: ≤**0 min.

3.      Alkalinity

To the cement paste under the condition C/W=*0:1, the PH after hydrating 1 hour is less than *0.5.

4.      Free expansive ratio:

Under the condition cement/sand=1:0.5, the free expansive ratio is 0.*0%*0.*5% in *8 days.

5.      The strength in different age are not less than the following: