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Determining the Contact Angle of Hardened Cement Paste Using Thin Layer Wicking Method

机译：用薄层芯吸法测定硬化水泥浆的接触角

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摘要

Contact angle is a very important parameter to investigate the function mechanism of chemical admixtures as well as the capillary stress resulted from self-desiccation or drying. However, in most of the studies, it is only assumed to be 0 degrees. This paper studied the contact angle of hardened cement paste using thin wicking method. A serious of study was conducted on the influence of layer preparation, pre-contacting method, cement paste powder size, and suspension concentration on the measuring results. An optimized thin layer wicking method was proposed for determining the contact angle of hardened cement paste, which improves effectively the linear correlation of the penetration distance - time curve and satisfies the prerequisite of Washburn function.
机译：接触角是研究化学外加剂的作用机理以及自干燥或干燥引起的毛细管应力的重要参数。但是，在大多数研究中，仅假定为0度。本文采用稀疏芯吸法研究了硬化水泥浆的接触角。对层制备，预接触方法，水泥浆粉大小和悬浮液浓度对测量结果的影响进行了认真的研究。提出了一种优化的薄层芯吸法来确定硬化水泥浆的接触角，从而有效地改善了穿透距离-时间曲线的线性相关性，并满足了Washburn函数的先决条件。

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  • 来源
  • 会议地点 Shanghai(CN)
  • 作者

    Qian Tian; Hang Zhang; Yujiang Wang; Fei Guo; Ting Yao; Jiaping Liu;

  • 作者单位

    State key Laboratory of High performance Civil Engineering Materials, Jiangsu Research Institute of Building Science;

    State key Laboratory of High performance Civil Engineering Materials, Jiangsu Research Institute of Building Science;

    State key Laboratory of High performance Civil Engineering Materials, Jiangsu Research Institute of Building Science;

    State key Laboratory of High performance Civil Engineering Materials, Jiangsu Research Institute of Building Science;

    State key Laboratory of High performance Civil Engineering Materials, Jiangsu Research Institute of Building Science;

    State key Laboratory of High performance Civil Engineering Materials, Jiangsu Research Institute of Building Science;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Contact angle, cement paste, superplasticizer, thin layer wicking method;

    机译：接触角，水泥浆，高效减水剂，薄层芯吸法;

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