UHPC-102 White Silica Fume

Key Specifications

UHPC-102 High-Strength, Wear-Resistant Zirconium Silica Fume

Product Features: Finer particles and high stability, suitable for white UHPC decorative projects.

Request Quote

Product Introduction

UHPC-102 White Silica Fume is a high-purity, active mineral admixture specifically developed for ultra-high-performance concrete (UHPC) systems. Made from carefully selected high-quality raw materials and subjected to precise grading and stabilization processes, it features a high specific surface area, high reactivity index, and excellent particle size distribution.With high whiteness and low impurity content, this product is particularly suitable for UHPC components with stringent requirements for appearance and mechanical properties, such as architectural curtain wall panels, prefabricated components, bridge components, and high-end landscape products.

In UHPC systems, UHPC-102 White Silica Fume significantly enhances the density of cementitious materials and the strength of the interface transition zone through pozzolanic reactions. It effectively optimizes the pore structure, improving compressive strength, flexural strength, and durability. Additionally, its micro-filling effect improves slurry workability and construction stability while reducing permeability and the risk of carbonation, providing a stable and reliable material foundation for high-strength, highly durable, and long-lasting structures.

Technical Principle

  • Mechanism
    of Secondary Volcanic Ash Reaction in UHPC-102: The highly reactive silica (SiO₂) in white silica fume undergoes a secondary volcanic ash reaction with calcium hydroxide (Ca(OH)₂) generated during cement hydration, producing additional low-alkali C-S-H gel. This reaction significantly enhances the structural strength of the paste, reduces free calcium content, and fundamentally improves the material’s compressive strength and durability.

  • Principles of Micro-Filling and Particle Gradation Optimization
    : UHPC-102 white silica fume features ultrafine particles with a particle size far smaller than that of cement particles. It effectively fills the micro-pores between cement and quartz powder, optimizing particle packing density. Based on the "theory of closest packing," this reduces the system’s porosity, resulting in a denser matrix structure and thereby improving both early- and late-age strength.

  • Interfacial Transition Zone (ITZ) Reinforcement Mechanism
    : At the interfaces between steel fibers or aggregates, white silica fume reduces the formation of coarse hydration product crystals, improves the microstructure of the interfacial transition zone, and lowers the probability of microcrack formation at the interface. This mechanism helps enhance flexural strength, impact resistance, and material toughness, serving as a crucial foundation for the high ductility of UHPC.

  • Pore Structure Refinement and Water Resistance Mechanism
    : Through the dual effects of secondary reactions and micro-filling, white silica fume significantly reduces the ratio of capillaries to interconnected pores, refines the pore size distribution, and lowers the permeability coefficient. This dense structure effectively enhances resistance to chloride ion penetration, carbonation, and freeze-thaw cycles.

  • Mechanism of Rheological Property Modulation
    : The graded, optimized white silica fume particles exhibit excellent dispersibility, which improves the lubrication effect of the paste particles. At appropriate dosages, this enhances workability and construction stability, reduces the risk of segregation and bleeding, and ensures the forming quality of UHPC products.

Technical Specifications

Physical PropertiesTypical ValuesChemical CompositionTypical Values
AppearanceOff-white, ultrafine powderSiO₂> 92%
Whiteness92 (Excellent color stability)ZrO₂2–3%
Initial Particle Size0.1 μm sphericalFe₂O₃< 1.0%
Crystal FormAmorphousAl₂O₃< 1.0%
D901.770 μmH₂O< 1.0%
Water Absorption105%CaO< 0.5%
Bulk Density320 kg/m³MgO< 0.5%
Loss on Ignition (LOI)< 2.0%Na₂O< 0.5%
Specific Surface Area (BET)15–30 m²/gK₂O< 0.5%
pH4.0*Test methods can be provided upon request*Typical values are for reference only and do not constitute quality standards

Material Characterization

UHPC-102 White Silica Fume
Click to enlarge

Applications & Performance

Applications

White or light-colored decorative UHPC

Ultra-thin UHPC components

Precast elements with high aesthetic requirements

UHPC products requiring high durability

Performance Advantages

1) Color advantages: Better suited for white systems
2) Provides strong micro-filling and enhances density
3) Enhances strength, particularly contributing to the development of matrix strength
4) Improve durability
5) Improve surface texture and molding performance
6) Color stability, wear resistance, and weather resistance provided by the zirconium content

Packaging & Logistics

Packaging Information

25 kg per bag, packed in woven bags
400 kg per ton bag
Can be customized to meet customer needs

Logistics Information

Delivery time: 10–60 days
Minimum order quantity: 1 ton
Shipping method: Sea Freight
Warehousing and Shipping: Warehouses located across the country; orders are fulfilled from the nearest location

Quality Control Process

1

Raw Material Testing

2

Production Process Monitoring

3

Finished Product Sampling and Testing

Technical Support & Services

24/7 Technical Support Hotline

Customized Solutions

Application Guide

Ready to Get Started?

Contact us now for more information or request a quote

Contact Us Now