Precast Concrete Anti-Shrinkage Expander, Lightweight Ceramic Kiln Expansion Granules

• Customization: Available
• Grade Standard: Industrial Grade
• Transport Package: 25kg/Bag
• Model NO.: EX-2
• Specification: bag
• Trademark: JUFU
• Origin: China
• Production Capacity: 50000mt/Year

Product Description

Product Description:

A high-performance calcium sulfoaluminate (CSA)-based expansive agent designed to compensate for drying shrinkage and thermal contraction in cementitious materials. It generates controlled expansion during hydration, enhancing concrete durability by preventing cracks in critical structures. Ideal for projects requiring dimensional stability and watertightness.

 

Specifications

 

Parameter	Value
Main Composition	Calcium Sulfoaluminate (CSA), Anhydrite
Expansion Rate (7d)	0.02%-0.10% (adjustable)
Setting Time	Initial: 30-60 min, Final: ≤4 hrs
Alkali Content	≤0.5% (Low-alkali formula)
Particle Size	80-120 μm (Fine Powder)
Packaging	25 kg/bag or 1 ton/jumbo bag

 

Application

 

1. Concrete Structures

• Waterproof Basements: Compensates shrinkage in poured concrete walls/floors.

• Bridge Decks: Reduces cracks caused by thermal stress.

• High-Speed Rail Sleepers: Enhances early-strength and expansion synergy.
   

2. Mortar & Grout

• Tile Adhesives: Prevents hollowing due to shrinkage.

• Grout for Machine Bases: Ensures tight contact with no voids.
   

3.  Precast Elements

• Pipe Joint Sealing: Expands to fill gaps in pipe connections.

• Prefabricated Wall Panels: Minimizes curing cracks.
   

4. Special Projects

• Sewage Treatment Tanks: Improves sulfate resistance.

• Nuclear Power Plants: Meets low-alkali requirements.
  
   

Package and storage

 

Packaging:

• --25 kg woven bags with moisture-proof lining.

• --Bulk bags  for industrial buyers.
   

Storage:

• --Keep in dry, cool conditions (<30°C, humidity <50%).

• --Avoid direct sunlight and contact with acids/bases.
  
  
   

  Our Advantages

   

  -- Early Expansion: 70% expansion within 3 days.
  -- Low Corrosion: Chloride-free, safe for rebar.
  -- Compatibility: Works with Portland cement, fly ash, slag.