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Hardening Accelerating Water-reducing Admixture JF-6

JF-6 improves the early strength and later strength of concrete in the environment of alternating temperatures.

Category

Naphthalene series


Detail

Applications

JF-6 improves the early strength and later strength of concrete in the environment of alternating temperatures..

JF-6 is the major measures for speeding up the job scheduler and improving work efficiency.

JF-6 applies to the project of precast concrete, cast-in-place concrete, steam-cured concrete and early strength concrete.

Properties

Dosage: 1.5-2.5%, water-reducing rate: 10-15%.

JF-6 can save cement 10-15% and don’t decrease the strength, when it is circumstanced under the same slump constant.

JF-6 isn’t suitable for the steamed curing

Strength of JF-6 increases quickly.

JF-6 applies to concrete work under the condition of -5℃-30℃.

Uniformity

Item

Results

Item

Results

Appearance

Isabelline powder

pH  Value

7-9

Moisture content (%)

5±1%

Cement paste fluidity(mm)

≥160

Fineness(0.315mm),<

5%

Chloride ion (%)

≤0.6%

Concrete performance with 2.0% dosage by binder mass

Test item

Quality index

Results

Hardening accelerating

Standard

Set retarding

Water reducing rate (%), ≥

8

8

8

14.4

Ratio of bleeding rate (%), ≤

95

100

100

24.3

Air content (%), ≤

4.0

4.0

5.5

3.0

Difference in setting time(min)

Initial setting

-90~+90

-90~+120

﹥+90

-67

Final setting

-23

Ratio of compressive strength (%), ≥

1d

135

320

3d

130

115

186

7d

110

115

110

167

28d

100

110

110

127

Ratio of shrinkage(%), ≤

28d

135

107

Conclusion: the project is in line with early strength index of “High range water-reducing admixture” in GB8076-2008.

Packaging, transport and storage

Powder JF-6 is available in 25kg film-lined bags. 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-6 is two year under normal conditions. If storage has surpassed the time, test must be done to confirm the validity.

Keyword

hardening

concrete