What is Polycarboxylate Superplasticizer?
Polycarboxylate superplasticizer with 50% solid content is a high-performance concrete admixture designed to improve the workability, strength, and durability of concrete. It is formulated using advanced polymerization technology, ensuring excellent water reduction and slump retention properties while maintaining eco-friendly standards.
Polycarboxylate superplasticizer with 50% solid content
Physical and chemical indicators of polycarboxylate superplasticizer:
| Test Items | Standard Requirement | Test Result |
| Appearance | Homogeneous liquid | Clear, yellowish |
| Solid Content (%) | 50 ± 1.5 | 50.2 |
| pH Value | 6.0 - 8.0 | 7.3 |
| Density (g/cm³, 20°C) | 1.08 ± 0.02 | 1.09 |
| Chloride Content (%) | ≤ 0.1 | 0.05 |
| Alkali Content (Na₂Oeq, %) | ≤ 1.0 | 0.6 |
| Water Reduction Rate (%) | ≥ 25 | 28 |
| Setting Time Difference | ||
| - Initial Setting (min) | ±90 (vs. Control) | +60 |
| - Final Setting (min) | ±120 (vs. Control) | +75 |
| Compressive Strength Ratio (%) | ||
| - 3 Days | ≥ 130 | 145 |
| - 7 Days | ≥ 125 | 135 |
| - 28 Days | ≥ 120 | 128 |
| Fluidity Retention (1h, mm) | ≥ 80% of initial | 230 (Initial: 250) |
| Air Content (%) | ≤ 3.0 | 2.1 |
Feature of polycarboxylate superplasticizer:
Highly efficient water reduction: Polycarboxylic acid water reducing agents with 50% solids can significantly reduce the water-cement ratio in concrete, achieving a water reduction of at least 30%. This helps to improve the workability and strength of the concrete.
Good flow retention: This type of water reducing agent is effective in retaining the flow (slump) of concrete, which is particularly important in situations where there is a long period of transport or waiting for a pour to be made during the construction process.
Enhanced Early Strength: The use of polycarboxylic water reducing agents promotes the early strength development of concrete, resulting in shorter project cycles and faster formwork turnover.
Reduced shrinkage and risk of cracking: Due to the reduced water-cement ratio, the use of this water reducing agent helps to reduce the shrinkage of the concrete once it has hardened, which in turn reduces the risk of cracking.
Environmentally friendly: the low chloride and alkali content means that it has no corrosive effect on steel reinforcement and reduces environmental problems caused by chemical additives, favouring the development of green buildings.
Adaptable: It is suitable for all types of concrete, including high-performance concrete, self-compacting concrete (SCC), precast elements and mass concrete works.
Economic benefits: By optimising the cement dosage, it not only saves material costs, but also improves construction efficiency and brings better economic benefits.
Applications of concrete Superplasticizer Additive
Applications of concrete Superplasticizer Additive
High-Performance Concrete: Ideal for projects requiring high early strength, such as bridges, tunnels, and high-rise buildings.
Applications of Polycarboxylate Superplasticizer
Safety and Precautions of Polycarboxylate Superplasticizer
1. Polycarboxylate superplasticizer is a weakly alkaline solid, non-toxic, corrosive, and nonpolluting to the environment. However, it is not edible. When it comes into contact with the human body and eyes, it should be washed with clean water as soon as possible. If it causes allergy to some human bodies, it should be treated in time.
2. Polycarboxylate superplasticizer should be stored in a cardboard bucket lined with plastic bags to avoid the mixing of rainwater and sundries.
3. The shelf life of polycarboxylate superplasticizer powder is 12 months.
Packaging and storage of polycarboxylate superplasticizer
The liquid of concrete admixture superplasticizer is sealed in 25kg, 200 kg and 1000 kg barrels.
FAQs of polycarboxylate superplasticizer
