文章摘要
大掺量复配超细矿粉对水泥粒度分布、力学性能及碳排放的影响
Effects of High-Volume Blending of Ultra-Fine ground granulated blast furnace slag powder on Cement Particle Size Distribution, Mechanical Properties, and Carbon Emissions
投稿时间：2025-03-04  修订日期：2025-03-04
DOI：
中文关键词: 超细矿粉  碳排放  水泥粒度分布  力学性能
英文关键词: ultra-fine ground granulated blast furnace slag powder  carbon emissions  cement particle size distribution  mechanical properties
基金项目:水泥低碳生产技术研究与示范 安徽省科技厅 （0031）；辊压机半终粉磨工艺下水泥及混凝土性能研究 中建材（合肥）粉体科技装备有限公司（FY2023-02）
作者单位邮编
黄德祥* 中建材（合肥）粉体科技装备有限公司 230041
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中文摘要:
      为探索大掺量超细矿粉对水泥性能与碳排放的协同优化机制，本文通过复配不同比表面积（400-700 m²/kg）超细矿粉替代原水泥组分，系统研究其对水泥粒度分布、力学性能及碳排放的影响。结果表明：大掺量（10-50%）复配超细矿粉可以增加复配水泥颗粒分布宽度，并降低32μm以上颗粒的占比，增加3μm以下颗粒占比，且掺量越高越明显。复配超细矿粉比例20%及以上可以造成水泥3d抗压强度降低；当超细矿粉比表面积600-700m2/kg，水泥的28d抗压强度随超细矿粉掺量（10-50%）的提高而提高。复配水泥的碳排放系数随超细矿粉掺量的增加而逐渐降低，当超细矿粉掺量为50%时，水泥的碳排放可以降低45.9%（304.70 kgCO₂/t）。超细矿粉比表面积≥500 m²/kg且掺量10%时，可以实现水泥的颗粒分布加宽，3d、28d抗压强度不降低（36.4MPa、64.4MPa），水泥碳排放降低9.0%（511.90 kgCO₂/t）。本研究可为低碳水泥工业化生产提供方案参考。
英文摘要:
      To explore the synergistic optimization mechanisms of high-volume ultra-fine ground granulated blast furnace slag powder on cement performance and carbon emissions, this study systematically investigates the effects of incorporating ultra-fine ground granulated blast furnace slag powders with varying specific surface areas (400-700 m²/kg) to replace original cement components on cement particle size distribution, mechanical properties, and carbon emissions. The results show that high-volume (10–50%) compounding of ultra-fine ground granulated blast furnace slag powders increases the width of cement particle distribution, reduces the proportion of particles >32 μm, and increases the proportion of particles <3 μm, with more pronounced effects at higher compounding ratios. Compounding ratios ≥20% lead to a reduction in 3-day compressive strength. However, when the specific surface area of ultra-fine ground granulated blast furnace slag powders reaches 600–700 m²/kg, the 28-day compressive strength improves with increasing compounding ratios (10–50%). The carbon emission coefficient of compounded cement decreases progressively with higher compounding ratios, achieving a 45.9% reduction (304.70 kgCO₂/t) at a 50% compounding ratio. When the specific surface area of ultra-fine ground granulated blast furnace slag powders is ≥500 m²/kg and the compounding ratio is 10%, the cement exhibits widened particle distribution, maintains 3-day and 28-day compressive strengths (36.4 MPa and 64.4 MPa, respectively), and reduces carbon emissions by 9.0% (511.90 kgCO₂/t). This research provides a practical reference for industrial production of low-carbon cement.
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