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High performance polycarboxylate superplasticizer VF-2

VF-2 is used in concrete in industrial and civil buildings, hydraulic engineering, transport system, port engineering, and municipal engineering.

Category

Polycarboxylate series


Detail

Applications

VF-2 is used in concrete in industrial and civil buildings, hydraulic engineering, transport system, port engineering, and municipal engineering.

VF-2 is used in ready mix plants, precast and concrete plants.

VF-2 is suit for ordinary concrete, high strength concrete, self-compaction concrete and as-cast-finish concrete.

Properties

Excellent water-reducing ability. VF-2 can significantly reduce 40% mixing water in high strength concrete.

Enhance physical and mechanical properties of concrete.

Enhance durability of concrete.

Enhance volumetric stability of concrete.

Excellent compatibility with Portland cement.

High water retention capacity.

Usage

For powder VF-2, the dosage is typically 0.8%~2.5%, 3.0% for high strength concrete.

The amount of VF-2 used in concrete will be slightly adjusted depending upon job requirements, such as concrete strength, variations in cement, aggregate and other job site conditions. Experiments for appropriate dosage must be carried out when changing concrete mix proportion or materials.

VF-2 can be added in concrete with other raw materials directly.

VF-2 cannot be used with naphthalene based water reducing admixture.

Experiment must be done when VF-2 is used together with other admixtures.

Uniformity

Item

Index

Item

Index

Appearance

yellow brown powder

Classification

High performance water-reducing admixture

Chloride Ion

≤0.6%

PH  Value

6-8

Cement Paste Fluidity

≥220mm

Density (g/ml)

1.10±0.02 g/ml

Concrete performance with 1.0% VF-2 by binder weight

Test item

Quality index

Results

Hardening Accelerating

Standard

Set Retarding

Water reducing rate (%), ≥

25

25

25

25.4

Ratio of bleeding rate (%), ≤

50

60

70

0

Air content (%), ≤

6.0

6.0

6.0

3.5

Difference in setting time(min)

Initial setting

-90~+90

-90~+120

﹥+90

+60

Final setting

+46

1h change

Slump(cm)

≤80

≤60

30

Ratio of compressive strength (%), ≥

1d

180

170

235

3d

170

160

210

7d

145

150

140

183

28d

130

140

130

150

Ratio of shrinkage(%),

28d

110

103

Conclusion: the project is in line with “high performance water reducer” index of GB8076-2008.

Packaging, Transport and Storage

Liquid VF-2 is available in sealed plastic tank. Other special package can also be available according to prior consultation.

Special measures should be taken to ensure entire package.

Dry and well ventilated warehouse is needed for storage. Quality guarantee of VF-2 is one year under normal conditions.

If storage has surpassed the time, test must be done to confirm the validity.

Keyword

polycarboxylate

vf-2

in

concrete

is

of

be

and

with

concrete.