JDJSJ-SAK 03: Slump Retaining Water Reducing Agent

Technical Introduction

JDJSJ-SAK 03 is a high-performance polycarboxylate-based admixture designed specifically for slump retention in ready-mixed and high-fluidity concrete applications. It combines advanced water-reducing capability with extended workability time, ensuring that fresh concrete maintains its desired slump without significant water addition.

The product utilizes a polycarboxylate ether (PCE) backbone with optimized side-chain length and functional groups to achieve controlled dispersion release. This unique molecular structure allows cement particles to remain well-dispersed over time, minimizing slump loss due to hydration or flocculation.

Applications

1. Ready-Mix Concrete

   • Prevents slump loss during transport and placement.

   • Ideal for long-haul deliveries and large-scale pours.

2. Mass Concrete Construction

   • Maintains workability over extended setting times in large structures.

3. Self-Compacting Concrete (SCC)

   • Ensures flowability without segregation for long-duration casting.

4. Hot Climate Concrete Production

   • Effectively resists rapid slump loss due to high ambient temperatures.

Advantages

• Excellent Slump Retention – Maintains workability for 60–120 minutes or more, depending on dosage.

• High Water Reduction – Achieves significant strength gains by lowering the water-to-cement ratio.

• Compatibility – Works well with most cements, supplementary cementitious materials (SCMs), and other admixtures.

• Low Dosage Efficiency – Reduces overall admixture cost per cubic meter of concrete.

• Environmental Benefits – Low VOC, formaldehyde-free, environmentally friendly formulation.

Typical Parameters

FAQs

Q1: What makes JDJSJ-SAK 03 different from standard water reducers?
A1: Standard reducers focus mainly on initial fluidity, while JDJSJ-SAK 03 is engineered to maintain that fluidity over time without re-dosing.

Q2: Can this product be combined with early-strength agents?
A2: Yes. When used with early-strength water reducers, it balances workability retention with accelerated strength gain.

Q3: How does dosage affect slump retention?
A3: Higher dosages generally increase slump retention time but may slightly delay setting; optimal levels should be determined through trial mixes.

Q4: Is JDJSJ-SAK 03 effective in high-temperature conditions?
A4: Yes, it is formulated to resist rapid slump loss caused by heat, making it ideal for summer concreting.

Q5: Does it affect concrete strength?
A5: It maintains or improves strength due to its high water-reducing capability, even when extending workability.