首页> 外文会议>XV international conference on electron microscopy >Scanning electron microscopy in the studies of hydrated cementitious materials microstructure formed in the presence of some heavy metals containing admixtures
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Scanning electron microscopy in the studies of hydrated cementitious materials microstructure formed in the presence of some heavy metals containing admixtures

机译:扫描电子显微镜研究水合胶结材料在某些重金属混合物存在下形成的微观结构

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The calorimetric measurements together with microscopic observations and analyses relating to the interaction of cement paste with sulfate and nitrate solutions of various concentration were carried out. These salts modify the rate of cement hydration at early age. In the presence of sulfates the formation of some well crystallized calcium sulfates or calcium sulfoaluminates can be found. In case of nitrates there is no additional products. However, one can observe that the calcium silicate phase becomes less fibrous but more compact, with very small individual particles, as the nucleation from the liquid phase is disturbed. There are the accompanying cations incorporated in this product.
机译:进行了比色法测量以及显微镜观察和有关水泥浆与各种浓度的硫酸盐和硝酸盐溶液相互作用的分析。这些盐改变了水泥在早期的水合速率。在存在硫酸盐的情况下,可以发现一些结晶良好的硫酸钙或磺铝酸钙的形成。如果是硝酸盐,则没有其他产品。但是,可以观察到,由于液相的成核受到干扰,硅酸钙相的纤维化程度降低,但变得更紧密,单个颗粒非常小。该产品中包含有附带的阳离子。

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