Naphthalene series of high concentration of water reducing agent (naphthalene sulfonate)

 

Naphthalene series of high concentration of water reducing agent (naphthalene sulfonate)

Naphthalene series of high concentration of water is a naphthalene sulfonate purification products, with non-air, superplastic, efficient water reduction and enhanced functions.

 

Chinese name	Naphthalene series high efficient water reducing agent
Execution standard	GB/8076-2003
characteristics	Low alkali and sodium sulfate, high purity
appearance	Yellow or brown powder

 

 

   

 

Product features:

Product adaptability to cement, less content, easy to use, especially suitable for efficient water reduction and enhanced requirements of the flow of concrete, steam curing concrete, can also be used as composite concrete admixture of the parent material.

 

Products indicators:

A pilot project	Performance indicators
Water/solid content, %	≤8
Fineness (more than 0.315 mm sieve), %	<15
Aqueous solution pH value (10 g/L)	8±1
chloride ion content, %	<0.4
Sodium sulfate content, %	≤2.0
total amount of alkali %（Na2O+0.658K2O）	≤4
Density （20±1℃），g/ml	—
Fluidity of net cement slurry，mm	>210

 

Product performance:

1, efficient water reduction. Its water reduction rate of 25% or more. Superplasticization, can effectively increase the mobility of concrete, reduce bleeding and segregation, thereby improving the ease of concrete, easy construction, easy to dense.

2, enhance the effect is good. Under the same amount of cementitious materials, the compressive strength of concrete with 1d, 3d, 7d and 28d can be increased by 50 ~ 110%, 40 ~ 90%, 40 ~ 70% and 20 ~ 40%.

3, product adaptability, products adapted to a variety of specifications, the type of cement. Products and other admixtures compatibility, and expansion agents, air entraining agents and other additives and fly ash and other active admixture with the function complement each other, mutual excitation.

4, the condensation time is appropriate. The impact of the product on the beginning and end of the cement is very small, the condensation time difference is generally within 1h.

5, the product of low content of sodium sulfate, dubbed the liquid in the winter without crystallization, to solve the winter in the concrete manufacturing due to sodium sulfate crystals caused by the problem of pipe clogging for the winter concrete construction provides a convenience; and retardation components, The slump of concrete is small.

6, product safety performance. Non-toxic, non-irritating and radioactive, non-corrosive substances against steel damage; non-flammable and explosive, non-dangerous goods.

7, good durability. The product can effectively improve the pore structure of concrete, thereby greatly improving the concrete impermeability, anti-carbonation and anti-freeze-thaw and other durability indicators.

8, easy to use. Products can be used directly, can also be dissolved in water, dubbed solution type admixture for a variety of construction environment or mixing type requirements.

 

   

 

Scope of application:

Can be used for daily minimum temperature 0 ℃ above the construction of concrete, and for the preparation of large flow of concrete, high strength concrete and

Steamed concrete. Concrete with superplasticizer is steam curing, the concrete should have the necessary structural strength to heat up, steam curing system should be determined by experiment. Products are widely used in a variety of cast-in-place concrete works and prefabricated concrete products. Particularly suitable as a matrix for the composite of various types of concrete admixtures.

Instructions:

1, commonly used for the quality of cement 0.4 ~ 1.0%.

2, if the direct use of powder, it should be put together with the cement, not directly added to the wet sand, stone surface; if dubbed into a solution, it should dissolve fully, stir evenly.

Packaging and storage

1, the powder is made of plastic bags lining the woven bag, net bag content of 25 ~ 30kg.

2, the agent is easy to dissolve in water, so in the transport and storage should not break bags, and strict moisture. If the damp caking, should be crushed and passed through the 0.63mm sieve before use.

3, the long-term preservation of the agent will not deteriorate.