Description
The Naphthalene-based High Range Water Reducing Concrete Admixture is a highly efficient concrete admixture, primarily used to improve the fluidity and workability of concrete, while significantly reducing the water-binder ratio and enhancing the strength and durability of concrete.
Features
Highly efficient water-reducing performance
The Naphthalene-based High Range Water Reducing Concrete Admixture is a high-performance admixture designed for concrete formulation, with a water-reducing rate of 15%-20%. This means that the amount of mixing water can be significantly reduced while maintaining the fluidity of the concrete.
Wide pH range
Our product is suitable for environments with a pH value of 7-9, which covers the actual conditions of most concrete construction. In this pH range, it can maintain stable chemical properties and will not fail or produce adverse reactions due to changes in pH.
Low sodium sulfate content
The sodium sulfate content of our product is controlled at ≤22%, which helps reduce the alkali-aggregate reaction (AAR) in concrete and avoid structural damage. The low sodium sulfate content also means that the admixture is less corrosive to steel bars, further ensuring the safety and durability of concrete structures.
Applications
High-strength concrete
Such as high-rise buildings, bridges, tunnels, airport runways and other high-strength concrete projects.
High-performance concrete
Such as special concrete materials such as ultra-high performance concrete (UHPC) and self-compacting concrete (SCC).
Prestressed concrete
Used in the production of prefabricated components and prestressed concrete, it can effectively improve the stability and strength of components.
Underground projects
Such as subways, underground parking lots and other underground concrete projects that require good impermeability.
Specifications
|
Items |
Naphthalene-based Superplasticizer |
|
Appearance |
Brown Powder |
|
Solid Content |
≥93% |
|
Moisture |
≤7% |
|
PH value |
7-9 |
|
Sodium Sulfate Content |
≤22% |
|
Surface Tension(mN/m) |
70±2 |
|
Chloride Content |
≤0.5% |
|
Water Reducing Rate |
15%-20% |
|
Steel-bar Corrosion |
None |
Dosage
The recommended dosage of Dispersing Agent MF is 0.5 to 1.5% by weight of cement. The exact dosage depends on factors such as the quality of the cement, aggregates, water/cement ratio, and ambient temperature. Therefore, it is often advisable to conduct trial mixes to determine the optimal amount.
Package
It is available in 25kg woven plastic bags, 25kg kraft paper bags, and 650kg or 700kg jumbo bags.
Shelf Life
The well-packaged product has a shelf life of 12 months from the date of production. If the product exceeds this period, it must be tested and verified before use.
FAQ
Q: What are the primary applications of Naphthalene-based High Range Water Reducing Admixture?
A: It is widely used in ready-mix concrete, precast concrete, high-strength concrete, self-compacting concrete, and concrete for structural applications where high strength, durability, and workability are required.
Q: How does Naphthalene-based High Range Water Reducing Concrete Admixture work?
A: The admixture works by dispersing cement particles more effectively in the concrete mix, reducing the amount of water needed for a given workability. This leads to denser concrete with improved strength and reduced permeability.
Q: Is Naphthalene-based High Range Water Reducing Concrete Admixture environmentally friendly?
A: Yes, it is considered environmentally friendly because it reduces the need for excess water and cement, contributing to more efficient use of materials and reducing the environmental impact of concrete production.
Q: What is the recommended dosage of Naphthalene-based High Range Water Reducing Concrete Admixture?
A: The typical dosage ranges from 0.5% to 2.0% by weight of cement, depending on the desired level of water reduction and concrete workability. Exact dosage should be determined based on trial mixes and specific project requirements.
Q: Can Naphthalene-based High Range Water Reducing Concrete Admixture be used in all types of concrete?
A: Yes, it can be used in various types of concrete, including high-strength concrete, self-compacting concrete, and normal concrete. However, it is important to carry out trials to ensure compatibility with specific mixes and materials.
Q: What are the potential side effects of overusing Naphthalene-based High Range Water Reducing Concrete Admixture?
A: Overuse can lead to excessive retardation, making the concrete mix difficult to handle, and may result in reduced setting times or lower early strength. It's important to follow the recommended dosage and conduct mix trials to avoid these issues.
Q: How should Naphthalene-based High Range Water Reducing Concrete Admixture be stored?
A: The admixture should be stored in a cool, dry place, away from direct sunlight and freezing temperatures. It should be kept in tightly sealed containers to prevent contamination and moisture absorption.
Q: What are the safety precautions when handling Naphthalene-based High Range Water Reducing Concrete Admixture?
A: It is important to wear protective gloves and eye protection when handling the admixture. Avoid inhaling dust or fumes, and ensure adequate ventilation in the working area. If contact with skin or eyes occurs, rinse thoroughly with water.
|
Items |
Naphthalene-based Superplasticizer |
|
Appearance |
Brown Powder |
|
Solid Content |
≥93% |
|
Moisture |
≤7% |
|
PH value |
7-9 |
|
Sodium Sulfate Content |
≤22% |
|
Surface Tension(mN/m) |
70±2 |
|
Chloride Content |
≤0.5% |
|
Water Reducing Rate |
15%-20% |
|
Steel-bar Corrosion |
None |