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

机译:用薄层芯吸法确定硬化水泥浆的接触角

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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:接触角是研究化学加法物的功能机制以及自我干燥或干燥引起的毛细管应力的一个非常重要的参数。然而,在大多数研究中,只假定为0度。本文研究了使用薄芯吸法的硬化水泥浆料的接触角。对层制剂,预接触法,水泥糊粉末尺寸和悬浮浓度进行测量结果的影响,进行了严重的研究。提出了一种优化的薄层芯吸方法,用于确定硬化水泥浆料的接触角,这有效地改善了穿透距离 - 时间曲线的线性相关性,并满足了盥洗衰竭的先决条件。

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