White Powder SMF Superplasticizer for Precast Concrete

• Customization: Available
• Appearance: Powder
• Application: Concrete Admixture, Mortar Admixture
• Model NO.: SMF-01
• 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

 

1. Precast & Prestressed Concrete

• Improves flowability for intricate molds, reducing voids.

• Enhances early strength for faster demolding.
   

2. Self-Leveling Underlayments & Floors

• Ensures high slump flow (600-750mm) without segregation.
   

3. Shotcrete (Wet-Mix Process)

• Reduces rebound and improves adhesion to vertical surfaces.
   

4. Glass Fiber Reinforced Concrete (GRC)

• Enhances fiber dispersion in thin-section products.
   

5. Marine & Sulfate-Resistant Concrete

• Low chloride content prevents rebar corrosion.
   

6. High-Performance Concrete (HPC)

• Enables low w/c ratios (<0.35) for 80+ MPa strength.

 

 

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

 

• Recommended Dosage (by Cement Weight)

• Standard Concrete: 0.5-1.0%

• High-Flow Concrete: 1.0-1.5%

• Precast Elements: 0.3-0.8%

 

Package and storage

 

• Packaging: 25 kg bags (PE-lined) / 500 kg bulk bags.

• Storage: Keep away from moisture at 10-30°C.

 

FAQ Section

 

Q1: Can SMF be used with PCE-based superplasticizers?
---- Yes, but conduct compatibility tests to avoid over-dispersion.
 

Q2: Does SMF delay setting time?
---- Minimal effect (1-2 hrs delay for OPC). Use retarders for longer delays.
 

Q3: Is SMF suitable for hot weather concreting?
---- Yes, but consider a retarded SMF type (>4 hrs setting delay).
 

Q4: How does SMF compare to NSF superplasticizers?
---- Advantages: Better sulfate resistance, less foaming.
---- Limitations: Lower water reduction than PCE.
 

Q5: Shelf life of SMF powder?
---- 24 months in sealed, dry conditions.