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Ultrafine Powder
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Ultrafine Powder

Our Ultrafine Powder is a high-performance admixture specially developed for cement manufacturing, concrete production, pipe pile manufacturing and cement-based fireproof and thermal insulation materials. It is compounded by high-quality mineral powder and fly ash, adopting advanced grinding technology to ensure uniform particle size, good activity and excellent compatibility with cement and concrete. As a professional manufacturer integrating cement and admixture production, we strictly control the quality of raw materials and production processes, making our ultrafine powder meet international standards and become an ideal auxiliary material for modern construction projects.

The unique composite formula of mineral powder and fly ash endows the ultrafine powder with excellent performance advantages. When added to cement manufacturing, it can effectively improve the strength, durability and impermeability of cement, reduce the consumption of cement clinker, and lower production costs while ensuring product quality. In concrete manufacturing, it can optimize the workability of concrete, enhance its compactness and frost resistance, reduce shrinkage and cracks, and extend the service life of concrete structures, which is widely used in bridges, roads, high-rise buildings and other large-scale projects.

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    Introduction
    Product Introduction
    MANUFACTURING

    For pipe pile manufacturing, our ultrafine powder can improve the fluidity and moldability of concrete, ensure the compactness and strength of pipe piles, enhance their load-bearing capacity and durability, and meet the strict quality requirements of precast pipe piles in various construction scenarios. In addition, it is also an important raw material for cement-based fireproof and thermal insulation materials, which can improve the fire resistance, thermal insulation performance and mechanical strength of the materials, making them suitable for thermal insulation and fire protection projects of various buildings.

    MANUFACTURING

    Compared with single-component admixtures, our composite ultrafine powder has more comprehensive performance, better cost-effectiveness and stronger adaptability. It is non-toxic, harmless and environmentally friendly, in line with the development concept of green and low-carbon construction. We provide stable supply, flexible packaging options and professional technical support to meet the diverse needs of customers in different fields. Whether you are a cement manufacturer, concrete mixing plant, pipe pile producer or building material enterprise, our ultrafine powder will bring more value to your products and projects.

    SPECIFICATIONS

    Mineral Powder-Fly Ash Composite Ultrafine Powder

    No. Test Item Unit Standard Requirement Test Result Individual Judgment
    1 Specific Surface Area m²/kg ≥450 520 Qualified
    2 Moisture Content % ≤1.0 0.3 Qualified
    3 Fluidity Ratio % ≥95 102 Qualified
    4 3-day Activity Index % ≥70 78 Qualified
    5 28-day Activity Index % ≥95 105 Qualified
    6 Loss on Ignition % ≤3.0 2.1 Qualified
    7 Sulfur Trioxide (SO₃) % ≤2.0 1.5 Qualified
    8 Chloride Ion Content % ≤0.06 0.02 Qualified
    PERFORMANCE

    Application Performance Test of Ultrafine Powder

    No. Application Scenario Test Item Unit Test Result Effect Evaluation
    1 Concrete Mixing Concrete 28-day Compressive Strength Increase Rate % 12.3 Significantly Improves Strength
    2 Pipe Pile Manufacturing Concrete Fluidity mm 230 Meets Pipe Pile Pouring Requirements
    3 Cement-Based Insulation Materials Thermal Conductivity Reduction Rate % 8.7 Improves Thermal Insulation Performance
    4 High-Performance Concrete Concrete Shrinkage Rate % 0.035 Effectively Reduces Shrinkage Cracks

    Quality & Production

    TECHNICAL SPECIFICATIONS / 2026

    1.1 General Product Quality Inspection Report

    Report No.CQ-20260304-001
    Inspection DateMarch 4, 2026
    InstitutionBuilding Materials Quality Inspection Center
    Sample SourceYancheng Yuanlai Commerce & Trade Co., Ltd.
    1.1.1 Inspection Purpose

    To verify whether the Masonry 32.5 Cement, Composite 42.5 Cement, and Mineral Powder-Fly Ash Composite Ultrafine Powder produced by the company meet the requirements of GB 175-2007 "Common Portland Cement", GB/T 18046-2017 "Granulated Blast Furnace Slag Powder for Cement, Mortar and Concrete", and GB/T 1596-2017 "Fly Ash for Cement and Concrete", and to provide a basis for product delivery and market application.

    1.1.2 Inspection Basis
    • GB 175-2007 "Common Portland Cement"
    • GB/T 18046-2017 "Granulated Blast Furnace Slag Powder for Cement, Mortar and Concrete"
    • GB/T 1596-2017 "Fly Ash for Cement and Concrete"
    • GB/T 1346-2011 "Test Methods for Water Requirement of Normal Consistency, Setting Time and Soundness of Cement"
    1.1.3 Inspection Conclusion

    All inspection items of the 3 types of products (Masonry 32.5 Cement, Composite 42.5 Cement, Mineral Powder-Fly Ash Composite Ultrafine Powder) submitted for inspection this time meet the requirements of the corresponding national standards, and are judged as Qualified, which can be delivered in batches and put into engineering application.

    1.2 Production Process Description

    1.2.1 Raw Material Pretreatment
    • Cement Raw Materials: Limestone, clay, and iron powder are mixed in proportion, homogenized in a homogenization silo, and then enter the raw material mill.
    • Ultrafine Powder Raw Materials: Mineral powder (granulated blast furnace slag) is dried and magnetically separated to remove impurities; fly ash is sorted (to remove coarse particles) to ensure raw material purity ≥98%.
    1.2.2 Grinding Process
    • Cement: A "roller press + ball mill" combined grinding system is adopted to control fineness (80μm sieve residue) ≤8% (Composite 42.5 Cement) and ≤10% (Masonry 32.5 Cement), with a specific surface area of 350-400 m²/kg.
    • Ultrafine Powder: An "vertical mill + classifier" ultra-fine grinding process is adopted; the classifier speed is controlled at 3000-3500 r/min to ensure a specific surface area ≥450 m²/kg, and the particle size distribution is concentrated in 1-30μm.
    1.2.3 Homogenization and Packaging
    • Homogenization: Cement and ultrafine powder enter the continuous homogenization silo respectively, and the composition is homogenized through air stirring, with a homogenization coefficient ≥0.85.
    • Packaging: Fully automatic packaging machines are used; the weight error of cement packaging is ±1kg, and the packaging tightness of ultrafine powder (25kg/bag or 1000kg/ton bag) is ≥99%.

    1.3 Application Suggestions

    1.3.1 Masonry 32.5 Cement

    Scenarios Residential building wall masonry, floor tile bonding, indoor wall plastering.
    Guidelines Water-cement ratio is controlled at 0.5-0.6, mixing time ≥3min, water spraying and curing within 24h after masonry, curing period ≥7d.

    1.3.2 Composite 42.5 Cement

    Scenarios Concrete mixing plants, precast floor slabs, pipe piles, high-rise building foundations.
    Guidelines When used in combination with ultrafine powder, the dosage of ultrafine powder can be controlled at 15%-25%, which can increase the 28-day compressive strength of concrete by 8%-12%.

    1.3.3 Composite Ultrafine Powder

    Scenarios High-performance concrete, cement-based fireproof insulation materials, marine engineering concrete.
    Guidelines Marine engineering: 20%-30% dosage (chloride ion resistance +30%); Insulation: 10%-15% dosage (thermal conductivity -5%-8%).

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