Naphthalene is a highly effective retarding and water reducing agent
Product overview
Naphthalene series effective retarding water reducer has the characteristics of high water reduction rate, good fluidity, small slump loss, no segregation, no bleeding and so on. At the same time can greatly improve the fluidity of concrete and the strength of each age, especially in the late strength has obvious enhancement effect, is the preferred admixture of high strength concrete, commercial concrete, shock-free concrete, self-leveling grouting material and other products
Scope of application:
1, suitable for construction of concrete and large volume concrete under hot temperature conditions, cast-in-place piles, etc.
2, suitable for slip-form construction concrete, pumped concrete, fly ash concrete, etc.;
3, can be configured with C15-C45 grades of concrete.
Product model
| model |
solid content |
Sodium sulfate content |
Fluidity of cement slurry |
water-reducing rate |
| SNF-5 |
≥91 |
≤5% |
≥200 |
≥18 |
| SNF-18 |
≥91 |
≤18% |
≥180 |
≥16 |
Performance characteristics:
1, this product is non-toxic, non-combustible, stable form, no corrosion of steel bars;
2, the gas content is 2.5-4.0%, which is conducive to pumping construction;
3, sodium sulfate content ≤18%, low alkali content, will not cause alkali aggregate reaction;
4, water reduction rate 12-20%, can increase the flow of the mix, concrete slump reaches 15-20cm; 60min loss ≤20mm, suitable for continuous pouring of large volume concrete in hot season, reduce hydration heat release, reduce the temperature stress of concrete, avoid the generation of temperature difference cracks;
5, increase the compactness of concrete, reduce shrinkage, improve the durability of concrete, and extend the service life of concrete.
The outstanding disadvantage of naphthalene superplasticizer is poor slump retention performance, which can be mixed with retarding agents (sodium tripolyphosphate, sodium citrate, potassium sodium tartrate, sodium gluconate, sucrose) to reduce slump loss. It can also be combined with lignosulfonate to maintain certain air permeability and reduce the slump loss of concrete
Recommended dosage:
Powder products are generally 1.2-3.0%,
Liquid products are generally 1.2-3.0%.
How to use:
1, according to engineering requirements, adjust the dosage after testing;
2, generally added to the mixer with mixing water. The plasticizing effect is the best if the delay is added or the concrete is added and stirred slightly before pouring.
3, in order to ensure the best use effect, it is recommended that the user in the first use of this product or in the project before the replacement of cement varieties, should be based on the specific situation of the project, by trial mixing test to determine the best dosage and mixing method.
Packaging and storage:
1, powder products for 25kg/ bag, should prevent damage to the packaging moisture,
Liquid products according to user requirements to use ton barrels and 200 kg blue barrels, long-distance transportation can also use liquid bags; .
2, should be stored in a cool and dry place, avoid direct sunlight.
3, the shelf life of this product is 1 year, expired should be determined by the experiment.
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