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    • 石灰石粉掺量和粒径对水泥基材料力学性能影响

    ZHANG Bowen,HE Fuqiang,HE Zhihai, WANG Yong, ZHOU Jin

    Multipurpose Utilization of Mineral Resources（2024）

    College of Civil Engineering

    Cited 0|Views10
    Abstract
    这是一篇陶瓷及复合材料领域的论文。通过混料设计原理设计石灰石粉水泥配合比，对石灰石粉掺量及粒径对石灰石粉-硅酸盐水泥体系力学性能的影响展开了研究；并通过X射线衍射(XRD)、低场核磁共振技术（NMR）等技术对掺入0.44 mm和0.025 mm石灰石粉的硅酸盐水泥净浆水化物相及微孔结构展开了分析。结果表明，两种石灰石粉对早期抗压强度起负面作用；但随着水化的进行，在一定掺量范围内的石灰石粉对水泥后期强度有一定的增强作用，当掺量超过该范围后抗压强度随着掺量的增加而逐渐减小。石灰石粉的掺入虽使得水化产物中生成了有利于水泥石力学性能的水化碳铝酸钙，但其对微孔结构的粗化，使得石灰石粉掺量超过一定值后石灰石粉水泥试件抗压强度大幅降低。
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    Key words
    Ceramics and composites,Limestone powder,Strength,Pore structure,Hydration products
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