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Polycarboxylate retarding superplasticizer liquid (VF-2)

Impermeability mark of VF-2 can be P12, intensity of 100 times freezing and thawing cycle without loss and lasting quality has improved significantly.

Category

Polycarboxylate series


Detail

Applications

Impermeability mark of VF-2 can be P12, intensity of 100 times freezing and thawing cycle without loss and lasting quality has improved significantly.

VF-2 is suitable for continuous concrete in mass in the hot season, reduce the hydration heat and avoid temperature cracks.

VF-2 can improve the concrete workability and enhance the technical performance of concrete.

To strictly control the content in accordance with the mix ratio of construction, do not exceedthe recommended dosage.

Before VF-2 mixed use with other admixture, it must pass the laboratory test.it can not be mixed with naphthalene based water reducing admixture.

VF-2 is chloride – free, low alkali, good for the adaptability of cement

VF-2 is applicable to concrete construction in the temperature conditions of - 5 ° c - 40 degrees Celsius.

VF-2 isn’t suitable for the cement admixture which is made by anhydrite and fluorgypsum and also unsuitable for prefabricated part of steam curing.

Properties

Excellent water-reducing ability. VF-2 can significantly reduce 15% ~40% mixing water in concrete with 1.5%~3.5% dosage.

Setting time: setting time delay 2-4h.Raise special requirements in the service at pre-sales stage.

Uniformity

Item

Results

Item

Results

Appearance

White  liquid

Liquid density ((20℃))

1.04±0.02 g/ml

Cement paste fluidity(mm)

≥240mm

pH  Value

6-8

Concrete performance with 2.0% dosage by binder mass

Test item

Quality index

Results

Water reducing ratio(%),≥

15

28.0

ratio of bleeding rate(%),≤

100

0

Air content(%),≤

3.0

2.0

Difference in setting time
(mm)

initial setting

+120--+240

+168

Final setting

+153

Ratio of compressive strength
(%), ≥

3d

125

173

7d

125

152

28d

120

140

Ratio of shrinkage(%),

28d

125

113

Anti-freeze label,≥

50

100

Reinforcement corrosion hazard

None

None

Conclusion: the project is in line with retarding index of “Retarders as well as high efficiency water reducing agent” of DL/T5100-1999.

Packaging, transport and storage

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

Special measures should be taken to ensure entire package. Keep waterproof during transportation.

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