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Naphthalene anti-freezing admixture JF-15

Category

Naphthalene series


Detail

Applications

JF-15 is suitable for winter construction of all kinds of concrete at the average temperature of -5 ℃ -15 ℃.

Slump loss of JF-15 is small.

JF-15 has better applicability for all kinds of cement and composite material.

JF-15 is chloride – free, low alkali and hazardous substance.

JF-15 hasn’t corrosion for reinforcement metal.

JF-15 belongs to green production.

Properties

Dosage: 2.5~4.5% at temperatures not lower than -15 ℃.

Mixing water should be required to heat.

Pumping's temperature of concrete should be higher than 5 ℃ and use comprehensive thermal storage method.

Uniformity

Item
Results

Results

Item

Results

Appearance

Power

grey powder

pH  Value

7-9

liquid

tan liquid

Cement paste fluidity(mm)

≥160

Liquid density (20℃)

1.18±0.02 g/ml

Liquid solid content

30±2%

Concrete performance with 3.5% dosage by binder mass

Test item

Quality index, I
(set point of temperature is -10℃)

 

Results

Water reducing rate (%), ≥

10

18

Ratio of bleeding rate (%), ≤

80

0

Air content (%), ≤

2.5

3.3

Difference in setting time(min)

Initial setting

-150~+150

-25

Final setting

-20

Ratio of compressive strength (%), ≥

-7d

12

15

28d

100

127

-7d+28d

90

99

-7d+56d

100

111

28d Ratio of shrinkage(%),

135

119

Permeated height rate (%), ≤

100

80

Loss rate of frozen-thaw strength (50 times) (%), ≤

100

41

Ammonia burst size (%), ≤

0.10

0.01

Reinforcement corrosion hazard

Explanation of Reinforcement corrosion hazard must be done

None

Remark: set point of temperature is -10℃(serviceability temperature is -15℃)

Conclusion: the project is in line with acceptable end product index in JC475-2004.

Packaging, transport and storage

Powder JF-15 is available in 25kg film-lined bags.Liquid JF-15 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 JF-15 is two year under normal conditions. If storage has surpassed the time, test must be done to confirm the validity.

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