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Water reducing admixture JF-5

JF-5 is no chlorine and low alkali.

Category

Naphthalene series


Detail

Applications

JF-5 is no chlorine and low alkali.

JF-5 is low content, reasonable price and better economic result.

JF-5 applies to common concrete.

JF-5 applies to the cement admixture which is made by anhydrite and fluorgypsum and steamed concrete.

Properties

Dosage: 0.5-1.0%.

There was no significant effect on the setting time.

Air content increased slightly.

Retention value of slump constant: 1h≥90%

Before JF-5 mixed use with other admixture, it must pass the laboratory test.

Use it in the above 5 degrees celsius temperature conditions.

Uniformity

Item

Results

Item

Results

Appearance

grey powder

pH  Value

7-9

Fineness(0.315mm),<

5%

Chloride ion (%)

≤0.6%

Moisture content (%)

5±1%

 

 

Concrete performance with 0.75% dosage by binder mass

Test item

Quality index

Results

Hardening accelerating

Standard

Set retarding

Water reducing rate (%), ≥

8

8

8

13.0

Ratio of bleeding rate (%), ≤

95

100

100

0

Air content (%), ≤

4.0

4.0

5.5

2.7

Difference in setting time(min)

Initial setting

-90~+90

-90~+120

﹥+90

-11

Final setting

-17

Ratio of compressive strength (%), ≥

1d

135

3d

130

115

142

7d

110

115

110

139

28d

100

110

110

132

Ratio of shrinkage(%), ≤

28d

135

120

Conclusion: the project is in line with retarding index of “water-reducing admixture” of GB8076-2008.

Packaging, transport and storage

Powder JF-5 is available in 25kg film-lined bags. Other special package can also be available according to prior consultation.

  Dry and well ventilated warehouse is needed for storage to prevent absorption of moisture and agglomeration. If storage has surpassed the time, test must be done to confirm the validity.

Keyword

admixture

setting