Lignosulfonate used as plasticizer
Lignosulfonate and modified Lignosulfonate superplasticizer are anionic surface active substances, on the adsorption and dispersion of cement, concrete can improve various physical performance. Reusable dubbed early strength agent, retarder, antifreeze, pumping agent, and naphthalene superplasticizer compound made of liquid admixtures basically no precipitate.
1.Lignosulfonate superplasticizer dosage of cement content 0.20-0.30%, commonly used dosage is 0.25% water reduction of up to 9-11%. In the appropriate dosage when compared with the reference concrete strength increased by 15-20% 3 days, 7 days strength increased 20-30%, 28 days by 15-20%, long-term strength also increased.
2.Without changing the water in the case of concrete( suggested ratio 0.65)1to increase the flow of concrete, improved work-ability.
3.In keeping concrete slump, the same intensity and the reference concrete, cement can save 8-10%, the use of one ton of Lignosulfonate superplasticizer powder, can save 30-40 tons of cement.
4.In the standard state, concrete mixed with this agent may delay compared with the reference concrete setting time of concrete more than 3 hours, the final setting time of 3 hours, the peak heat of hydration delayed more than five hours, is conducive to summer construction and commodity concrete transport and mass concrete.
5.Lignosulfonate superplasticizer with micro-entraining, can improve the impermeability of concrete freeze-thaw performance.
6.After the agent mixed concrete and aggregates of reinforced non-corrosive.
7.Increase its water dispersion capacity to avoidwater bubble inside the slump.
Suitable for concrete, high fluidity concrete, pumping concrete, concrete products and concrete construction in summer as well as retarding the special requirements of concrete, concrete piles, concrete piles sink, hand-dug piles of concrete and underground bulk concrete construction, with good economic benefits.
1 .Dosage is0.25- 0.50% by weight of cement, recommended dosage of 0.25%.
2.Powder can be added directly to the cement, sand, gravel in the dry mix, even after the addition of water for mixing, stirring time should be extended, to avoid uneven mixing. Powder can be prepared in advance a certain concentration of the solution, in liquid form to join, but attention should be deducted from the total water consumption of concrete.
3.Users when using this product according to the specific construction conditions (construction season, construction materials, etc.) with reference to the description of the concrete mix to make the necessary tests to obtain the best results.