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ProductThe product line covers a series of admixtures including rapid setting agents, water reducers, waterproofing agents, rust inhibitors, curing compounds, grouting materials and pressure grouting materials, as well as mortar admixtures.
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ApplicationThe products are widely used in concrete engineering projects across various sectors, including construction, highways, bridges, high-speed railways, power, water conservancy, ports, and tunnels.
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AboutThe leading supplier of innovative civil engineering materials in Guangxi, specializing in the R&D, production, and sales of concrete admixtures.
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TechnologyIt holds over ten patents and has participated in drafting more than ten standards, including the Technical Specification for Application of Polycarboxylate Superplasticizer (a national mandatory standard) and Solid Polycarboxylate Superplasticizer (T/CBMF187-2022).
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BlogFollow Keda news to stay up-to-date with the latest developments in real-time
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ContactCustomer satisfaction is our constant pursuit, and Keda wholeheartedly serves you
KD-JS Retarding High-Performance Water Reducer (HPWR-R)
KD-JS is a polycarboxylic acid polymer-based retarding high-performance water reducer, formaldehyde-free, non-toxic, non-flammable, non-corrosive to rebar. Features high water reduction, high early strength, high enhancement, low slump loss, low shrinkage, and environmental friendliness. Particularly suitable for high-durability, high-flowability, high-strength pump concrete and fair-faced concrete, especially for optimized commercial concrete production.
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Keda New Materials
Concrete Admixtures
Product Details
Technical Specifications
| Parameter | Value |
| Solid content | ≥20% |
| Water reduction rate | ≥25% (up to 35%+) |
| pH value | 6.0-8.0 |
| Retarding effect | Significant |
| Dosage | 0.6-3.5% of binder weight |
Key Features
• High water reduction up to 35%+, saving 25%+ cement
•3d +50-100%, 28d +40-80%, 90d +30-50% vs. control
•Excellent cement compatibility, slump retention nearly unaffected by temperature
•Low shrinkage: 20%+ reduction vs. naphthalene-based
•Superior pumpability: no segregation, no bleeding
•Smooth surface, high durability, low alkali, minimal chloride
•Eco-friendly: formaldehyde-free
•Significant retarding: extends setting time, delays heat peak, prevents cold joints
Applications
•High-speed rail, passenger lines, buildings, roads, bridges, ports, airports
•Precast and cast-in-place, reinforced and prestressed concrete
•Especially for high-durability, high-flowability, high-strength pump concrete
Usage & Precautions
•Dosage: 0.6-3.5% of binder weight
•Do not mix with naphthalene sulfonate. Test compatibility with other admixtures
•Curing: begin immediately after final set
Packaging & Storage
•Liquid product: packed in plastic drums or transported by tanker truck.
•Also available in powder form: packed in woven bags with inner plastic liners. Keep dry during storage and transport.
•Store away from direct sunlight at +5 to +35°C. Shelf life: 12 months.
Safety Information
•May cause irritation upon contact with eyes or skin.
•First Aid: A) Skin contact - rinse with clean water. B) Eye/mucosa contact - flush immediately with water and seek medical attention if discomfort persists. C) If swallowed - drink plenty of water, induce vomiting, and seek medical help.
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No.9, Liangling Second Street,Nanning Area, China (Guangxi) Pilot Free Trade Zone