Chloride-Free SMF Admixture for Reinforced Structures, SMF Condensate Powder for Underwater Concrete

• Customization: Available
• Appearance: Powder
• Application: Concrete Admixture, Floor Hardener, Grouting Material, Mortar Admixture, Plastering Material, Self-Leveling Compound
• Model NO.: SMF-02
• Chemical Composition: Sulfonated Melamine Formaldehyde
• Setting Time: Normal Setting Time
• Water Reduction Rate: 20%-30%
• Transport Package: 25kg/Bag
• Origin: China
• HS Code: 382440
• Production Capacity: 50000mt/Year

Product Description

Sulfonated Melamine Formaldehyde (SMF) is a high-performance, synthetic polymer-based superplasticizer widely used in concrete and mortar formulations. As a naphthalene-free alternative to traditional water reducers, SMF enhances workability, strength, and durability while reducing water content.

 

Specifications

 

Parameter	Standard Grade	Low-Alkali Grade
Appearance	White powder	Off-white powder
Solid Content	≥92%	≥90%
pH (1% solution)	7-9	7-9
Na2Oeq Content	≤1.0%	≤0.5%
Chloride Content	≤0.1%	≤0.05%
Water Reduction	18-25%	15-22%

 

Application

 

Role of Sulfonated Melamine Formaldehyde (SMF) in Concrete/Mortar

 

1. Primary Functions

 

• High-Range Water Reduction (Superplasticizer Effect)

  • Reduces water demand by 18-25% (at 0.5-1.5% dosage by cement weight), enabling low water-to-cement (w/c) ratios for higher strength (e.g., 80+ MPa).

  • Improves workability without compromising slump (e.g., achieves 200-250mm slump).

• Dispersion of Cement Particles

  • Electrostatic repulsion breaks cement agglomerations, enhancing hydration efficiency and reducing porosity.

• Early Strength Development

  • Accelerates 1-day strength by 30-50% (critical for precast/prestressed concrete).
    
     

2. Secondary Benefits

 

• Bleeding Control: Minimizes water segregation in self-leveling mortars.

• Sulfate Resistance: Ideal for marine/underground structures (low Cl^- content).

• Compatibility: Works synergistically with PCE-based admixtures for tailored performance.
  
   

3. Key Applications

 

• Precast Concrete: Ensures flowability for intricate molds.

• Self-Compacting Concrete (SCC): Achieves 600-750mm slump flow.

• Shotcrete: Reduces rebound in wet-mix spraying.

• GRC/Repair Mortars: Enhances fiber dispersion and adhesion.
  
   

4. Limitations

 

• Less effective at ultra-low dosages (<0.3%) compared to PCE superplasticizers.

• Mild retardation (1-2 hours) in standard OPC mixes.

 

 

Our Advantages

 

-- Naphthalene-Free: Eco-friendly alternative to NSF superplasticizers.
-- Sulfate Resistance: Ideal for marine environments.
-- Compatibility: Works with PCE-based admixtures for synergy.


 

Usage Guidelines

 

• Dosage: 0.5-1.5% by cement weight (optimize via trial mixes).

• Mixing: Pre-dissolve in water for uniform dispersion.

• Compatibility: Works with OPC, slag cement, and PCE admixtures.

 

Package and storage

 

• 25 kg moisture-proof bags or 500 kg jumbo bags.

• Shelf Life: 24 months in dry conditions (<50% humidity, 10-30°C).

 

Why Choose SMF?

 

• Cost-Effective: Lower price than PCE superplasticizers for comparable performance.

• Eco-Friendly: No naphthalene, low formaldehyde residue.

• Proven Performance: Used in high-speed rail, bridges, and nuclear plants.
  
   

For quotes or technical support, contact us today!