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Water proof anti-cracking admixture JF-13

Category

Naphthalene series


Detail

Applications

JF-13 is liquid.

JF-13 is suitable for concrete with impermeability and cracking resistance, and can be used in conjunction with the fiber.

JF-13 has tiny dilatability and can improve shrinkage of concrete effectively to reduce concrete shrinkage and concrete cracking.

JF-13 has the effect of delayed coagulation, when it mixed use with other admixture, test must be done to confirm the validity.

When JF-13 is first used, it must be mixed according to above introduction in the testing laboratory.

Properties

Dosage: 1.6~2.4%, water-reducing rate: 13-26%.

The same cement water ratio with JF-13 can improve incipient slump constant of concrete 10cm above,and it is suitable for transporting goods concrete at long bowls.

Greatly improved the workability、moisture retention、cohesiveness of JF-13, and can reduce pipeline pressure when pump.

There is delayed coagulation in initial set, can reduce the early rate of exothermic reaction during hydration and be favorable to pour concrete in mass.

To improve and change the pressive strength、rupture strength、tensile-strength、impermeability、lasting quality of concrete.

JF-13 applies to concrete work under the condition of -5℃-40℃.

Impervious gradation of mortar can be P8-P10, impervious gradation of C30 concrete can be P14. The highest impervious gradation of concrete can be P40.

Uniformity

Item

Results

Item

Results

Appearance(liquid)

Tan liquid

pH  Value

7-9

Liquid density (20℃)

1.18±0.02 g/ml

Chloride ion (%)

≤0.6%

Cement paste fluidity(mm)

≥210

 

 

Concrete performance with 2.0% dosage by binder mass

Test item

Quality index

Results

I

II

Cement paste invariability

pass

pass

pass

Ratio of bleeding rate (%), ≤

50

70

24

Difference in setting time(min)

Initial setting

-90

-90

+66

Ratio of compressive strength (%), ≥

3d

100

90

134

7d

110

100

124

28d

100

90

117

Permeated height rate (%), ≤

30

40

20

Moisture pickup rate(%), ≤

48h

65

75

46

Ratio of shrinkage(%),≤

28d

125

135

109

Conclusion: the project is in line with acceptable end product index of “Water-repellent admixture” in JC474-2008.

Packaging, transport and storage

JF-13 is available in sealed plastic or iron tank. Other special package can also be available according to prior consultation.

Quality guarantee of JF-13 is two year under normal conditions. If storage has surpassed the time, test must be done to confirm the validity.

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