94% Undensified Silica Fume

1️⃣ Product Overview

94U Silica Fume is a high-quality undensified microsilica product with a consistent silica content exceeding 94%. This ultra-fine amorphous silica powder is collected through specialized dust collection systems during the production of industrial silicon and ferrosilicon alloys. Featuring nano-sized spherical particles with an average diameter of 0.1-0.5μm and a specific surface area of 12,000-20,000 m²/kg, it demonstrates excellent pozzolanic reactivity.

2️⃣ Product Specifications

3️⃣ Performance Characteristics

· Excellent Pozzolanic Reaction: 94% amorphous silica content ensures thorough secondary reaction with cement hydration products

· Optimal Particle Distribution: Effectively fills voids between cement particles, improving pore structure

· Significant Strength Enhancement: 6%-10% dosage increases 28-day compressive strength by 15%-25%

· Superior Durability: Remarkably improves impermeability, chemical resistance, and freeze-thaw performance

· Improved Workability: Enhances concrete cohesion while reducing bleeding and segregation

4️⃣ Application Fields

· High-Performance Concrete: Suitable for C50-C80 grade concrete formulations

· Waterproof Concrete: Ideal for underground structures and dam constructions

· Corrosion-Resistant Concrete: Perfect for chemical plants and wastewater treatment facilities

· High-Strength Mortar: Used in high-strength masonry and plastering mortars

· Refractory Materials: Serves as quality additive in refractory applications

5️⃣ Usage Guidelines

· Must be used with water reducers (polycarboxylate-based superplasticizers recommended)

· Optimal dosage range: 6%-10% (exceeding 12% may affect workability)

· Extend mixing time by 30-60 seconds for uniform dispersion

· Maintain moist curing for minimum 7 days

· Add simultaneously with cement and other supplementary materials

6️⃣ Packaging & Storage

· Standard Packaging: 500kg or 600kg jumbo bags

· Special Packaging: 25kg bags (available upon request)

· Storage Conditions: Dry, ventilated warehouse with moisture-proof ground protection

· Stacking Requirements: Maximum 3 layers high

· Shelf Life: 24 months (under proper storage conditions)