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Portuguese PCE-Polycarboxylate Superplasticizer Flake
Polykarboxylátový superplastifikátor Vločka
Polycarboxylate Superplasticizer Flake（PCE) is a novel, eco-friendly, and high-efficiency product developed by our company. Formulated primarily from modified polycarboxylate ether, it offers excellent water-reducing performance and enhances concrete workability.
Technical Principle
The main chain of high-performance polycarboxylate superplasticizer molecules is adsorbed onto the surface of cement particles, effectively hindering hydration and enhancing fluidity retention. The side chains surrounding the cement particles provide both steric hindrance and electrostatic repulsion. This mechanism is entirely different from that of traditional superplasticizers, giving high-performance polycarboxylate superplasticizers superior dispersion and water-reducing effects.
Advantages and Feature
- High effective content of up to 97% or more and excellent water solubility. (It can completely soluble in water. If used for ready-mix or precast concrete, dissolve the PCE in water before use to obtain a solution with a solid content of 20% or 10%.)
- Good dispersibility, excellent adaptability to different types of cement, and high water-reducing performance.
- Excellent slump retention, enhance cohesion, and prevent segregation in concrete.
| Položka | Unit | Standard |
|---|---|---|
| Vzhled | / | White or light yellow flake |
| Sypná hustota | Kg/m³ | 500± 100 |
| Hodnota pH (23 °C) | / | 6.0 ± 1.0 |
| Effective Content | % | 97.0 ± 1.0 |
| Obsah vlhkosti | % | ≤ 3.0 |
| Míra snížení spotřeby vody | % | ≥ 25 |
| Obsah chloridových iontů | % | ≤ 0.02 |
| Obsah alkálií | % | ≤ 0.3 |
Product Classification
Water-reducing and slump-retaining types of admixtures share the same technical principle and are thus collectively known as superplasticizers.
Water-Reducing Type Superplasticizer
High water reduction rate and large initial fluidity.
Slump-Retaining Type Superplasticizer
Lower water reduction rate and smaller initial fluidity, with gradual release of water reduction over time to minimize or eliminate fluidity loss.
The Role of Superplasticizers in Concrete
Improves workability
Superplasticizers reduce the water-to-binder ratio, enhance the fluidity and plasticity of concrete, and make it easier to handle during mixing, transportation, and pouring.
Increases strength
By reducing water usage, superplasticizers can save cement consumption while maintaining concrete strength, thereby improving economic efficiency.
Enhances impermeability
Certain organic superplasticizers can react with hydration products in concrete to form stable complexes, thereby improving impermeability.
Improves durability
The use of superplasticizers enhances the mechanical properties, impermeability, and durability of concrete, extending its service life.
Scénáře použití
- Various ready-mix concrete in industrial and civil construction.
- National construction projects with high-performance requirements for concrete, such as water industry, marine engineering, seaports, transportation, and power projects.
- Special concretes such as high-strength, high-durability, and self-compacting concrete.
Usage and Precautions
(1) Recommended dosage is 0.1%–0.5% by weight of cementitious materials. The actual dosage should be determined through mix design testing.
(2) Testing must be conducted before use.
(3) This product is prohibited from being mixed with naphthalene sulfonates.
(4) When used with other additives, compatibility tests must be performed.
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Obecné dotazy
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