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Setting behavior of blended cement with limestone: influence of particle size and content

机译：水泥与石灰石的凝结行为：粒径和含量的影响

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The combined effects of particle size, surface area, and limestone content on the properties of blended cement with limestone were studied. Limestone powders with six different particle diameters and surface areas relative to the cement particles were tested: two sizes smaller with greater surface area, two sizes larger with less surface area, and two sizes similar to the original cement particle. Two systems were studied: blended cement with limestone consisting of one particle size distribution and limestone consisting of a combination of three particle sizes. The setting history and hydration degree were examined using a Vicat needle apparatus and performing Rietveld quantitative phase analysis of X-ray diffraction. The packing density of the different pastes was calculated based on the amount of water required for normal consistency. It was shown that the properties of blended cements with different particle sizes were affected significantly by two mechanisms: nucleation and packing density. These two mechanisms affected the chemical and physical properties of the blended cement by altering its setting rates.
机译：研究了粒径，表面积和石灰石含量对水泥与石灰石混合性能的综合影响。测试了相对于水泥颗粒具有六种不同粒径和表面积的石灰石粉末：两种尺寸较小，表面积较大的粉末，两种尺寸较大，表面积较小的粉末，以及两种尺寸与原始水泥颗粒相似的粉末。研究了两种系统：水泥和石灰石的混合（一种粒度分布）和石灰石的三种组合。使用Vicat针头装置检查凝固历史和水合度，并进行X射线衍射的Rietveld定量相分析。根据正常稠度所需的水量计算不同糊剂的堆积密度。结果表明，不同粒径的水泥混合料的性能受成核和堆积密度两个机理的显着影响。这两种机理通过改变其固化速率影响了混合水泥的化学和物理性能。

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