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New melamine superplasticizer liquid (VF-8)
Applications
VF-8 is used in concrete in industrial and civil buildings, hydraulic engineering, transport system, oil well drilling engineering, port engineering, and municipal engineering.
VF-8 is used in ready mix plants, precast and prestressed concrete plants.
VF-8 is especially for pumping concrete, as-cast-finish concrete, decorative concrete, self-leveling mortar and concrete.
VF-8 is suit for concrete with the requirements of high early strength, high fluidity.
VF-8 can be directly used with gypsum to improve the products performance.
VF-8 is used in amorphous refractory cast materials.
When VF-8 is mixed with gypsum plaster powder(mixing content is 0.3-1%).
It can obviously decrease much water,and improve gypsum slurry plastic viscosity.
It can improve the surface finish,durability,abrasion resistance of the gypsum products.Properties
Excellent water-reducing ability.
Enhance physical, mechanical and durability properties of concrete.
High early strength, free bleeding and low air-entraining and low shrinkage.
Excellent compatibility with sulphoaluminate and calcium aluminate cement.
Uniformity
Liquid VF-8
|
Item |
Results |
Item |
Results |
|
Appearance |
brownish red liquid |
Sodium sulfate (%) |
≤2.9 |
|
Density(20 ℃) |
1.09±0.02g/ml |
Chloride ion （%） |
≤0.6% |
|
Paste fluidity (mm) |
≥210 |
PH value |
7-9 |
|
Solid Content |
22% |
Cement paste invariability |
pass |
Performance with 2.0% (liquid)VF-8 by mass of binder
|
Test items |
Classification |
Results |
||
|
Standard |
Set Retarding |
|||
|
Net plasma stability |
qualified |
qualified |
qualified |
|
|
Water reducing rate (%), ≥ |
14 |
14 |
20.0 |
|
|
Ratio of bleeding rate (%), ≤ |
90 |
100 |
27 |
|
|
Air content (%), ≤ |
3.0 |
4.5 |
2.6 |
|
|
Difference in setting time（min） |
Initial setting |
-90~+120 |
﹥+90 |
+28 |
|
Final setting |
- |
+1 |
||
|
Ratio of compressive strength (%), ≥ |
1d |
140 |
- |
181 |
|
3d |
130 |
- |
171 |
|
|
7d |
125 |
125 |
161 |
|
|
28d |
120 |
120 |
145 |
|
|
Ratio of shrinkage（%）,≤ |
28d |
135 |
110 |
|
Packaging, transport and storage
liquid VF-8 is available in sealed plastic or iron tank. Other special package can also be available according to prior consultation.
The storage temperature should not be less than 0℃.
Quality guarantee of VF-8 is 12 months under normal conditions. If storage has surpassed the time, test must be done to confirm the validity.