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ZS Nuclear Power Cement Grinding Aid
ZS Nuclear Power Cement Grinding Aid is a specialized low-alkali, low-chloride grinding aid compliant with GB/T 31545. Meets five critical criteria: ultra-low alkali, extremely low chloride, low heat of hydration, high durability, strict Cr⁶⁺ control. Real case: PN42.5 cement achieved 60.0 MPa at 28 days (↑10.7 MPa). No heavy metals or radioactive impurities. Backed by 43+ patents from Zhongsen Holding Group.
Cement Grinding Aid
Details
ZS Nuclear Power Cement Grinding Aid
1. Product Introduction
What is ZS Nuclear Power Cement Grinding Aid?
ZS Nuclear Power Cement Grinding Aid is a specialized, low-alkali, low-chloride grinding aid compliant with GB/T 31545 and GB/T 26748. It meets five critical performance criteria: ultra-low alkali content, extremely low chloride levels, low heat of hydration, high durability, and strict control of hexavalent chromium. Specifically engineered for cement used in nuclear island containment structures, shielding buildings, and mass concrete structures in nuclear power plants, it effectively eliminates risks associated with alkali-aggregate reactions, reinforcement corrosion, and structural cracking.
How Does It Work?
Particle Dispersion: Neutralizes static charges on cement particle surfaces during grinding, preventing agglomeration and reducing the "cushioning effect" inside the mill.
Grinding Efficiency: By keeping particles separated, it allows the grinding media to work directly on the clinker, reducing energy consumption per ton.
Strength Activation: The active components chemically interact with cement phases (C₃S, C₂S), promoting more complete hydration and contributing to both early and late strength development.
Why Choose ZS Nuclear Power Cement Grinding Aid from Shengchuan?
20 Years of Focused R&D: Built on Zhongsen Holding Group's deep expertise in high-specification cement additives.
43+ National Patents: Protected by extensive intellectual property in green cement additives.
Top University Partnerships: Ongoing industry-academia cooperation with Tsinghua University, University of Science and Technology Beijing, and University of Jinan.
National Standards Contributor: Participation in national key R&D projects and contribution to 6 national industry standards.
Proven in 20+ Markets: Validated in over 20 markets including China, Africa, Southeast Asia, Central Asia, and the Middle East.
2. Technical Indicators
|
Parameter |
Specification |
Remarks |
|
Appearance |
Colorless transparent |
Uniform, free of precipitation |
|
Density (20°C) |
1.15 – 1.20 (g/cm³) |
— |
|
pH Value |
8.0 – 10.0 |
— |
|
Chloride Ion Content |
≤ 0.1% |
Safe for reinforced concrete |
|
Alkali Content (Na₂Oeq) |
≤ 1.0% |
Low alkali risk |
|
Recommended Dosage |
150g – 300g/ton of cement |
Optimized based on clinker type and mill conditions |
3. Key Benefits
|
Performance Area |
Expected Improvement |
|
Mill Output Increase |
10% – 20% (under equivalent fineness) |
|
Energy Savings |
8% – 15% reduction in specific power consumption |
|
Thermal Durability |
Heat of hydration slightly decreased; 28-day drying shrinkage reduced by 7%–12% |
|
Strength Enhancement |
3-day: +2.5-5 MPa; 28-day: +4-9 MPa |
|
Heat of Hydration |
3d and 7d heat of hydration increase ≤ 20 J/g |
4. Case Study
PN42.5 Nuclear Power Cement Trial
|
Parameter |
Without Grinding Aid |
With Grinding Aid (300g/t) |
Improvement |
|
3-Day Strength (MPa) |
23.4 |
24.0 |
↑ 0.6 |
|
7-Day Strength (MPa) |
32.3 |
35.6 |
↑ 3.3 |
|
28-Day Strength (MPa) |
49.3 |
60.0 |
↑ 10.7 |
|
3-Day Heat of Hydration (J/g) |
201 |
223 |
↑ 22 |
|
7-Day Heat of Hydration (J/g) |
340 |
358 |
↑ 18 |
5. Frequently Asked Questions
Q: How is the optimal dosage determined?
A: The recommended range is 150g – 300g per ton of cement. Exact dosage depends on clinker grindability, mill type, and target specifications. Our technical team can assist with mill trials.
Q: Will the addition of this product increase the heat of hydration and lead to temperature-induced cracks?
A: No. It utilizes high-purity alkanolamines that ensure a gradual heat release and contains no heat-accelerating inorganic salts. This allows for a steady hydration heat profile, making it suitable for mass concrete pouring in nuclear islands and helping to minimize thermal shrinkage cracks.
Q: Does this product contain heavy metals or radioactive impurities?
A: No. The raw materials are free of heavy metals and radioactive components. The product features a transparent, light-colored formulation that introduces no harmful impurities, complying with standards for nuclear power construction materials.
Q: How should the product be stored?
A: Store in a sealed plastic container at room temperature. Protect from freezing in winter. Do not store with strong acid additives. Shelf life: 6 months.
6. Application Scope
|
Application |
Benefit |
|
Ball Mill / Vertical Mill Grinding |
Improved throughput, lower energy intensity |
|
Nuclear Island Containment & Reactor Shielding Wall Cement |
Low alkali, low chloride, low heat; effectively prevents alkali-aggregate reaction, reinforcement corrosion, and thermal shrinkage cracking |
7. Usage Guidelines
Calibration: Install a dedicated metering pump and calibrate to target dosage. Addition point: clinker feed belt or mill feed port.
Application Point: Apply evenly onto the clinker feed before entering the mill.
Monitoring: Track mill amperage, production rate (t/h), and cement quality (Blaine, residue).
Note: We provide methods for detecting and controlling the feed rate.
8. Related Products
ZS-High-Efficiency Enhanced Grinding Aid – For maximum clinker replacement.
ZS-Cement Strength Enhancer – For further strength improvement.
ZS-Hexavalent Chromium Reducer – For environmental compliance.
ZS-Vertical Mill Special Cement Grinding Aid – For vertical mill applications.
9. Call to Action
�� shengchuangj@163.com
�� +86 156 8886 0208 (WhatsApp)
�� https://www.shengchuanintl.com
Shengchuan — A professional one-stop solution provider for cement/concrete.
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