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    JF-1 Superplasticizer (High Concentration)

    JF-1 Superplasticizer (High Concentration)

    Quantity
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    Detail

    JF-3 retarding superplasticizer is mainly composed of naphthalene sulfonate and formaldehyde condensate, moderate retarding component and plastic strengthening component. Because of its excellent internal quality, the retarding effect before initial setting is obvious, the early strength effect after final setting is remarkable, the slump loss is small, and the fluidity of concrete and the strength of concrete at different ages can be greatly improved. It is the preferred additive for new technology such as high strength concrete, commercial concrete, shock-free concrete and self-leveling grouting material.

    1. Technical performance:

    Dosage: Powder: 0.75-1.5% of the total gum content, liquid: 1.5-3.0% of the total gum content.

    Water reduction rate: can reach 15-30%, with high-quality mineral admixtures, C80 high-strength concrete can be prepared.

    When the strength and slump of concrete are basically the same as that of reference concrete, the cement can be saved by 15-20%.

    Added with this agent, the workability of concrete can be greatly improved, and the technical properties of concrete can be improved.

    Suitable for continuous pouring of large volume concrete in hot season, reduce hydration heat and avoid temperature cracking.

    The impermeability label can reach P10,100 freeze-thaw cycles without obvious loss of strength, and the durability is significantly improved.

    Slump retention value: 1H > 90% 2H > 85%.

    Retarding time: Delay setting time 2-5 hours, when there are special requirements, in the pre-sale service.

    2. Points for application and matters needing attention:

    Strictly control the mixing amount according to the construction proportion, and do not exceed the amount. The more the excess, the greater the harm.

    When used in combination with other admixtures, it needs to be determined by laboratory test.

    This product is chlorine-free, low alkali, good adaptability to various cement, and can be used in various reinforced concrete projects.

    It is suitable for concrete construction under the temperature of - 5 C - 40 C.

    Prefabricated components with anhydrite and fluorogypsum as setting regulators for cement and steam curing are not suitable.

    3. Uniformity indicators:

    Item

    Index

    Item

    Index

    Appearance

    powder

     

     

    Yellowish brown powder

    Fineness

    0.315mm筛余<15%

    liquid

    Brown liquid

    值 pH

    7-9

     

    Moisture content

    5±1%

    Density

    1.21±0.02g/ml

    Clean pulp fluidity

    ≥230mm

     

     

    4. Contrast of main technical performance indicators: Admixture: rubber * 1.0%

    Testing items

    Standard index

    detection result

    Standard form

    Retarding type

    Water reduction rate (%) not less than (>)

    14

    14

    19.8

    The ratio of bleeding rate (%) is not greater than (<)

    90

    100

    0

    Gas content (%) not greater than (<)

    3.0

    4.5

    3.8

    Coagulation time difference (min)

    Initial setting

     -90~     +120

    ﹥+90

    +148

    Final setting

    Compressive strength ratio (%)
     
    Not less than (>)

    1d

    140

    3d

    130

    7d

    125

    125

    142

    28d

    120

    120

    122

    Shrinkage ratio (%)
    Not more than (=)

    28d

    135

    117

    CONCLUSION: The items measured accord with the retarding index of "superplasticizer" in GB8076-2008.

    5. Recommended dosage of different strength grades and slump:

    strength grade

    Slump Cm

    Dosage (rubber *%)

    strength grade

    Slump Cm

    Dosage (rubber *%)

    C40

    8-10

    0.5

    C40

    20-22

    1.00

    C50

    8-10

    0.75

    C50

    20-22

    1.20

    C60

    8-10

    1.0

    C60

    20-22

    1.50

    Note: Due to the different types of cement and aggregates, this table is only for the reference of the user. The initial use of this product should be determined by trial mixing to achieve the best technical and economic benefits.

    VI. Packaging and Storage

    Powder use inner plastic bags. Outer woven bags are packed in double layers, 25kg each. Bulk or protocol packaging for liquid tankers.

    Store in a ventilated and dry place for 3 years. It can continue to be used after overdue menstrual test.

    Corresponding parameter set not found, please add it in property template of background
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    暂未实现,敬请期待
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