Polycarboxylate superplasticizer is a new generation of polycarboxylate high-performance superplasticizer which is formed by free radical polymerization of polyoxyethylene ether macromonomer, unsaturated acid and sulfonic acid monomer. The product has high water reducing rate and low slump loss performance, which ensures excellent workability, high strength and excellent durability of concrete. It can be widely used in pumping concrete, superfluid self-compacting and high-strength and high-strength performance concrete and commercial concrete.

1. Technical principle

After the water reducing agent is added to the concrete, the hydrophobic groups of the water reducing agent are directionally adsorbed on the surface of the cement particles, while the hydrophilic groups point to the aqueous solution to form a monomolecular or multi-molecular layer adsorption film. Due to the directional adsorption of the surfactant, the surface of the cement colloidal particles has the same sign of charge, so under the action of the same-sex repulsion, not only can the cement-water system be in a relatively stable suspension state, but also the cement can be kept in a stable state when adding water. The flocculation-like structure formed at the initial stage is dispersed and disintegrated, thereby releasing the water in the flocculation structure to achieve the purpose of water reduction.

2. Product Features

◆ Outstanding comprehensive performance. The product has a high water reducing rate (the water reducing rate can reach more than 35%) and a low slump loss rate, which can effectively improve the working performance of concrete, improve the strength and durability of concrete.

◆ Concrete has good workability. Fresh concrete has good workability, no segregation, no bleeding, good cohesion, moderate air content, suitable for pumping;

◆ High concrete hardening and durability. Concrete has high strength at all ages, good volume stability, and outstanding impermeability, freeze-thaw resistance, corrosion resistance and carbonation resistance;

◆ Wide adaptability. It has wide adaptability to Portland cement, ordinary Portland cement, slag silicate, fly ash cement, pozzolan cement and various admixtures.

◆ Green and environmental protection. The raw materials used are non-toxic and harmless, and no three wastes are produced in the production process.

3. How to use

◆ When this product is used in practice, it should be diluted with water as needed before use.

◆ The commonly used dosage is 0.6%-1.2% (based on the total amount of cementitious materials), and the best dosage should be determined by experiments according to the engineering materials and characteristics;

◆ The superplasticizer can be dissolved in water or added to the concrete mixer alone;

◆ It can be used in combination with lignosulfonate superplasticizer and various retarders;

◆ The company provides a full set of compounding technology, and can provide training for users. If there are any problems, engineers will come to guide them.

4. Scope of application

◆ It is suitable for preparing early-strength concrete, slow-setting concrete, precast concrete, cast-in-place concrete, large-flow concrete, self-compacting concrete, mass concrete, high-performance concrete and fair-faced concrete, prefabricated concrete in various industrial and civil buildings. Mixing cast-in-place concrete, especially suitable for low-grade commercial concrete.

◆ Can be widely used in national large-scale and key projects such as high-speed railways, nuclear power, water conservancy and hydropower projects, subways, large bridges, expressways, and harbor terminals.

◆ Applicable to all kinds of industrial and civil construction and commercial concrete mixing plants.

5. Homogeneity Index

The typical specifications for PCE Polymer (Standard water reducing/ Slump retaining types) are as follows (actual measurements apply to different models).

6. Performance Indicators of Concrete with PCE Polymer

 7. Packaging and storage

◆ This product is liquid and sealed in 200KG and 1000KG barrels. The storage process must be anti-leakage, anti-exposure, anti-high temperature;

◆ The shelf life is one year, and it can be used only after passing the inspection.

◆ This product is an alkali-free liquid, non-toxic, non-corrosive, and non-polluting to the environment, but it is not edible.

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