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P.O 52.5 Portland Cement | High Early-Strength Bulk Cement Supplier
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P.O 52.5普通硅酸盐水泥粉图片生成.jpeg

P.O 52.5 Portland Cement | High Early-Strength Bulk Cement Supplier

P.O 52.5 Ordinary Portland Cement is a high-grade general-purpose hydraulic cement manufactured under strict quality control in accordance with GB175-2023 standards. Produced using rotary kiln technology with premium clinker, our P.O 52.5 cement delivers exceptional compressive strength, rapid early strength development, and consistent performance across demanding construction applications.

With a measured 28-day compressive strength averaging 59.6 MPa — well above the 52.5 MPa national standard minimum — our cement provides a reliable margin of safety for critical infrastructure, high-rise buildings, precast concrete elements, and prestressed concrete projects.

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    Introduction
    Product Introduction
    Key Product Advantages

    Ultra-High Compressive Strength: 28-day average compressive strength of 59.6 MPa, exceeding the 52.5 MPa requirement by 13.5%, ensuring structural safety and durability. 
    Rapid Early Strength Gain: 3-day compressive strength reaches 32.3 MPa average, enabling faster formwork removal and accelerated construction schedules. 
    Superior Soundness & Stability: Passed boiling method soundness test, guaranteeing volume stability and eliminating the risk of unsound concrete. 
    Low Heat of Hydration: Optimized clinker composition results in moderate hydration heat, ideal for mass concrete structures and large pours. 
    Excellent Workability: Balanced particle size distribution with 7.6% 45μm sieve residue provides good cohesiveness, finishability, and pumpability. 
    Low Chloride Content: Chloride ion content as low as 0.035% — far below the 0.06% limit — providing enhanced corrosion protection for reinforced concrete.
    Consistent Quality Control: Every batch tested in our certified laboratory. Strict adherence to GB175-2023 national standards ensures batch-to-batch consistency.
    Rotary Kiln Production: Modern rotary kiln manufacturing process ensures uniform clinker quality and reliable chemical composition.

    SPECIFICATIONS

    Technical Indicators (GB175-2023)

    Item Unit National Standard Measured Value
    Loss on Ignition % ≤ 5.0 1.84
    Magnesium Oxide (MgO) % ≤ 5.0 1.95
    Sulfur Trioxide (SO3) % ≤ 3.5 2.43
    Chloride Ion % ≤ 0.06 0.035
    Residue on 45 um Sieve % ≥ 5.0 7.6
    Initial Setting Time min ≥ 45 132
    Final Setting Time min ≤ 600 199
    Soundness -- Qualified by Boiling Method Qualified
    Gypsum   Phosphogypsum [ ]   Desulfurization Gypsum [ √ ] Content (%): 5%
    PERFORMANCE

    Strength (Water-Cement Ratio 0.5)

    Item Unit National Standard Specimen 1 Specimen 2 Specimen 3
    3-day Flexural Strength MPa ≥ 4.5 6.5 6.5 6.4
    Average: 6.5 MPa      
    3-day Compressive Strength MPa ≥ 22.0 32.9 31.9 32.4
    Average: 32.3 MPa 32.1 32.4 32.1
    28-day Flexural Strength MPa ≥ 7.0 8.9 9 8.9
    Average: 8.9 MPa      
    28-day Compressive Strength MPa ≥ 52.5 60.4 60.5 58.4
    Average: 59.6 MPa 59.2 59.4 59.7
    PERFORMANCE

    Type and Content of Mineral Additives (%)

    Type National Standard Measured Value
    Slag Powder 6 ~ < 20 6
    Fly Ash /
    Cinder /
    Limestone /
    Total Additives 6
    Clinker + Gypsum 80 ~ < 94 94

    Typical Applications

    • High-rise buildings and commercial structures requiring high-strength concrete
    • Prestressed and precast concrete elements (hollow core slabs, beams, piles)
    • Bridges, tunnels, and highway infrastructure projects
    • Port construction and marine engineering works
    • Mass concrete structures (dams, foundations, retaining walls)
    • Repair and rehabilitation projects requiring rapid strength gain
    • Ready-mix concrete plants serving large-scale construction projects
    • Pre-stressed concrete sleepers and railway components

    Packaging & Supply Options

    Bulk Delivery: Available in bulk tanker trucks (30-60 tons per load) for large-scale projects and ready-mix plants. Ideal for high-volume construction sites.

    Bagged Packaging: Standard 50kg multi-layer paper bags with moisture-proof inner liner. Palletized and stretch-wrapped for easy handling and storage.

    Export Packaging: Export-grade 50kg bags on pallets, suitable for containerized shipping. Full container loads (20-25 tons per 20ft container) available for international orders.

    Why Choose Guji Cement?

    1.Certified Quality: Compliant with GB175-2023 national standards. Production license No. (Su) XK08-001-01313 issued by the national authority.

    2.Consistent Batch Quality: Rotary kiln production ensures stable clinker quality. Every batch undergoes rigorous laboratory testing before dispatch.

    3.Reliable Supply Capacity: Established cement manufacturer with stable production capacity and reliable delivery schedules.

    4.Technical Support: Experienced technical team available to advise on concrete mix design, construction practices, and troubleshooting.

    5.Global Export Experience: Experienced in packaging, documentation, and logistics for international cement shipments.

    • What is the difference between P.O 52.5 and P.C 42.5 cement?

    • What is the typical setting time of P.O 52.5 cement?

    • Can I use P.O 52.5 cement for mass concrete?

    • What is the shelf life of cement?

    • Do you provide export documentation?

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