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Lignin concrete additives
Time:2018-09-10 10:08 Views:
Sodium lignosulfonate water-reducing agent modified sodium lignosulfonate, the Department of powder low bleed air retarding water-reducing agent, anionic surface active substances, the adsorption and dispersion of cement can improve the phy

Sodium lignosulfonate water-reducing agent modified sodium lignosulfonate, the Department of powder low bleed air retarding water-reducing agent, anionic surface active substances, the adsorption and dispersion of cement can improve the physical properties of concrete performance. Can be compounded into early strength agent, retarder, antifreeze, pumping agent, etc., and naphthalene superplasticizer compound made after the liquid admixture is basically no precipitation. Meet the national standards for concrete admixtures.

Main performance:
1. Sodium lignosulfonate water-reducing agent dosage of 0.20-0.30% of the amount of cement, commonly used content of 0.25%, water reduction rate of up to 9-11%. In the appropriate amount, compared with the reference concrete strength increased by 3 to 15-20%, 7 days to improve the strength of 20-30%, 28 days to improve 15-20%, long-term strength has also increased.
2. Without changing the amount of concrete used in the case of water, can increase the mobility of concrete, improve workability.
3. In maintaining the concrete slump, the same strength and the reference concrete, can save 8-10% of cement, the use of a ton of sodium lignosulfonate water-reducing agent powder, can save 30-40 tons of cement.
4. Under standard conditions, the concrete mixed with the agent can delay the initial setting time of the concrete for 3 hours or more, the final setting time is 3 hours, and the hydration heat peak is delayed by more than 5 hours, which is favorable for the summer construction and commercial concrete Transport and mass concrete works.
5. Sodium lignosulfonate water-reducing agent with micro-air-entraining, can improve the performance of concrete anti-freeze-thawing.
6. The agent into the concrete after the steel and aggregate non-corrosive.

 



Scope of application:
This product is suitable for large volume concrete, large flow of concrete, pumping concrete, commercial concrete and summer concrete construction and the special requirements of the slow-setting concrete, pouring pile concrete, sinking pile concrete, artificial digging pile concrete and underground Volume of concrete construction, with good economic benefits.
Instructions:
1. The dosage is 0.20-0.30% of the cement weight and the recommended dosage is 0.25%.
2. Powder can be directly added to the cement, sand, stone dry mix, even after adding water for mixing, should be appropriate to extend the mixing time, to avoid uneven mixing. Powder can be prepared in advance of a certain concentration of the solution, in the form of water to join, but attention should be deducted from the total water consumption of concrete.
3. When using this product, please use the necessary concrete mix test according to the specific construction conditions (construction season, engineering materials, etc.) to obtain the best use effect.
Packaging, storage and transportation:
1. This product is powder, topical woven bag, wrapped in plastic bags, bag weight 25kg.
2. This product is valid for one year, after the expiration of the concrete test can continue to use.
3. This product should be stored in a cool dry place, should pay attention to moisture and moisture, anti-inside and outside the bag damage. If the caking, crushing or dubbed the solution to use, does not affect the use of results.
4. This product is non-toxic harmless, non-flammable and explosive dangerous goods.

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