ZS-Water-Reducing Polycarboxylate Superplasticizer

ZS-Water-Reducing Polycarboxylate Superplasticizer

1. Product Introduction

What is ZS-Water-Reducing Polycarboxylate Superplasticizer?

ZS-Water-Reducing Polycarboxylate Superplasticizer is a leading product both domestically and internationally, characterized by high water reduction rate, low dosage, good compatibility with cement, minimal slump loss, and no pollution. It also improves various performance indicators of fresh concrete and enhances workability.

How Does It Work?

Electrostatic Repulsion: The agent adsorbs onto the surface of cement particles, carrying the same negative charge. The particles repel each other, breaking up cement flocs and releasing the free water trapped within the flocs.

Steric Hindrance: The polycarboxylate side chains form a three-dimensional barrier layer, preventing cement particles from agglomerating again and maintaining the fluidity of the slurry.

Hydration Retardation: Adsorbed on the surface of C₃S and C₃A, it forms an adsorption layer, moderately delaying early cement hydration, controlling slump loss, and extending the workable time for construction.

Why Choose ZS-Water-Reducing Polycarboxylate Superplasticizer from Shengchuan?

20 Years of Focused R&D: Built on Zhongsen Holding Group's deep expertise in energy-saving and environmental protection for the cement industry.

43+ National Patents: Protected by extensive intellectual property in green cement additives, composite cementitious materials, and waterproofing technologies.

Top University Partnerships: Ongoing industry-academia cooperation with Tsinghua University, University of Science and Technology Beijing, and University of Jinan, along with an academician workstation in Shandong Province.

National Standards Contributor: Participation in national key R&D projects and contribution to 6 national industry standards for cement and concrete.

Proven in 20+ Markets: Since 2006, validated in over 20 markets including China, Africa, Southeast Asia, Central Asia, and the Middle East.

2. Technical Indicators

Parameter	Specification	Remarks
Appearance	Colorless and transparent	Uniform, free of precipitation
Density (20°C)	1.08 ± 0.02 kg/m³	—
Solid Content	20% – 40% (±1%)	—
Chloride Ion Content	≤ 0.1%	Safe for reinforced concrete
Alkali Content (Na₂Oeq)	≤ 1.0%	Low alkali risk
Recommended Dosage	500g – 800g per ton of cementitious material (0.5%–0.8%)	Fine-tuned based on sand and gravel mud content

3. Key Benefits

Performance Area	Expected Improvement
Compressive Strength Improvement	3-day early strength increases by 5%–12%; 28-day compressive strength increases by 4%–10% (at constant water-cement ratio)
Durability Improvement	Impermeability: seepage height reduced by 30%–45%; Carbonation resistance: 28-day carbonation depth reduced by 25%–35%
Cementitious Material Reduction	8%–18% reduction at equal strength and water-cement ratio; saves 10%–20% cement

4. Case Study

C30 Concrete Trial – Commercial Batching Plant Comparison

Parameter	Conventional Product	Shengchuan ZS-HPSA	Improvement
Cement (kg/m³)	230	230	—
Slag (kg/m³)	90	90	—
Fly Ash (kg/m³)	80	80	—
Water (kg/m³)	165	165	—
Admixture Dosage (%)	2.2	2.2	—
Initial Slump/Spread (mm)	220/540	230/550	↑ 10/10
2-Hour Slump/Spread (mm)	160/400	220/530	↑ 60/130

Result: At equal dosage and solid content, ZS-HPSA (used at 70% in the admixture blend) maintained initial performance after 2 hours with minimal loss, while the conventional product dropped significantly from 220/540mm to 160/400mm. The Shengchuan product delivered both higher initial workability and superior slump retention.

5. Frequently Asked Questions

Q: How is the optimal dosage determined?

A: The recommended dosage is 500g – 800g per ton of cementitious material. The optimal dosage can be fine-tuned based on cement compatibility, temperature, and concrete slump requirements. Our technical team can assist with industrial trials to determine your optimal economic dosage.

Q: Is this product high in chloride and alkali? Will it corrode steel reinforcement?

A: No. Chloride ion content is ≤0.1%, meeting national standards. It is low in chlorine and alkali, does not corrode steel reinforcement, and does not cause efflorescence on concrete.

Q: Can ZS-HPSA be used together with concrete synergist?

A: Yes, the two can be added separately. The water reducer reduces water and increases strength, while the synergist activates admixtures to further save cement. The combined effect results in a total cementitious material reduction of 18%–30%.

Q: How should ZS-HPSA be packaged and stored?

A: It can be transported by tanker truck or in 1000kg plastic drums. Custom packaging is available upon request. Shelf life is 1 year. If sedimentation occurs within the shelf life, stirring before use will not affect performance.

Q: Is there real case data proving the performance of this product?

A: Yes. In a commercial batching plant trial, ZS-HPSA (at 70% usage ratio in the admixture blend) maintained 2-hour slump/spread at 220/530mm with minimal loss, while a conventional product dropped from 220/540mm to 160/400mm. The Shengchuan product demonstrated significantly better workability retention.

6. Application Scope

Application	Benefit
Commercial Batching Plants	Save cement, reduce raw material costs
Precast Component Factories	Early strength enhancement, improved impermeability and frost resistance
Specialized Infrastructure Projects	High admixture content, low heat of hydration, prevents through-cracks, enhances impermeability and erosion resistance

7. Usage Guidelines

Calibration: Install a dedicated metering pump. Add ZS-HPSA at 0.5%–0.8% of total cementitious material mass (500g – 800g per ton). Direct metering can be used when no lift is required; a two-stage pumping method is used when the feeding height needs to be increased.

Application Point: Add to the mixer simultaneously with mixing water. Do not mix directly with dry materials.

Note: We provide customers with methods for testing and controlling concrete compatibility.

8. Related Products

ZS-HPRA Slump-Retaining Water Reducer – For superior slump retention over 3-4 hours.

ZS-PCA High-Performance Water Reducer – For maximum water reduction needs.

ZS-FPCA Anti-Freeze Water Reducer – For cold weather concreting.

ZS-Concrete Enhancer – Optimize concrete mix design and reduce cement usage.

9. Call to Action

Our engineering team is available for virtual or on-site concrete mix optimization. Contact us today for a free compatibility analysis tailored to your plant's specific materials and requirements.

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