What Is JDJSJ-AK 03 Slump Retaining Water Reducing Agent and How Does It Improve Concrete Performance?
Technical Introduction
JDJSJ-AK 03 is a high-performance water reducing agent designed specifically to retain slump and improve workability in concrete mixtures over extended periods. This additive reduces the water content needed for concrete while maintaining fluidity, allowing for easier placement and better compaction without sacrificing strength. The slump-retaining property ensures that the concrete maintains its workability during transportation and handling, reducing the risk of premature stiffening. It is commonly used in ready-mix concrete and precast operations where slump consistency is critical.
Applications
Ready-Mix Concrete: Maintains workability during transport and placement.
Precast Concrete: Ensures uniformity and ease of molding over time.
Pump Concrete: Prevents blockage by preserving slump during pumping.
High-Performance Concrete: Enhances strength by reducing water-cement ratio while retaining workability.
Infrastructure Projects: Bridges, tunnels, and highways requiring durable and workable concrete.
Advantages
Slump Retention: Keeps concrete workable for longer periods without adding extra water.
Water Reduction: Decreases water demand, improving concrete strength and durability.
Improved Finish: Produces smoother surfaces with reduced segregation and bleeding.
Compatibility: Works well with various cement types and supplementary cementitious materials.
Cost-Effective: Reduces material costs by optimizing water usage and improving quality.
Specifications (Typical Parameters)
| Parameter | Description | Typical Value |
|---|---|---|
| Appearance | Physical state | Brown liquid |
| Solid Content | Percentage of active ingredient | 30 - 35% |
| pH | Alkalinity | 6 - 8 |
| Density | At 20°C | 1.05 - 1.10 g/cm³ |
| Chloride Content | Maximum allowed | < 0.1% |
| Water Reduction Rate | Efficiency in reducing water | ≥ 12% |
| Slump Retention Time | Maintains slump (hours) | ≥ 2 hours |
FAQ
Q1: How does JDJSJ-AK 03 retain slump in concrete?
A: It disperses cement particles effectively, reducing water demand while delaying hydration to maintain fluidity longer.
Q2: Can this agent be used with all types of cement?
A: Yes, it is compatible with ordinary Portland cement and various blended cements.
Q3: Does it affect the final strength of concrete?
A: No, by reducing water content and maintaining slump, it generally improves final compressive strength.
Q4: How much JDJSJ-AK 03 should be added?
A: Typical dosage ranges from 0.3% to 1.0% by weight of cement, depending on the mix design and performance requirements.
Q5: Is JDJSJ-AK 03 suitable for hot weather concreting?
A: Yes, its slump retention helps counteract rapid slump loss in hot conditions.
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