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MORPHOLOGY OF DELAYED ETTRINGITE FORMATION (DEF) AS OBSERVED AND IDENTIFIED BY A SCANNING ELECTRON MICROSCOPE (SEM)

机译：扫描电镜（SEM）观察和鉴定的钙铝榴石形成的形态

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The development of delayed ettringite formation (DEF) proceeds in several steps and can be detected as two characteristics morphologies: typically, as a "gel-like" material when observed at low magnification, and as a "needle-like" crystals. The "gel-like" material is actually a massive formation of extremely fine ettringite needles, either perpendicularly oriented to cut concrete surfaces, or in parallel orientation to them. These two types of morphology, as observed in cement paste by a scanning electron microscope (SEM), either "in-situ", in cracks ("veins") or at aggregate particle/paste interfaces, are detailed.

机译：延迟钙矾石形成（DEF）的发展分几个步骤进行，并且可以检测为两种特征形态：通常，在低放大倍率下观察为“凝胶状”材料，以及观察为“针状”晶体。 “凝胶状”材料实际上是极细的钙矾石针的大块形成，其垂直定向以切割混凝土表面，或平行于其定向。如通过扫描电子显微镜（SEM）在水泥浆中所观察到的，这两种类型的形态是“原位”，裂缝（“静脉”）或聚集的颗粒/浆体界面。

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《International conference on cement microscopy》|1998年|55-76|共12页
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Stella L. Marusin;
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正文语种
中图分类水泥工业;显微镜;
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MORPHOLOGY OF DELAYED ETTRINGITE FORMATION (DEF) AS OBSERVED AND IDENTIFIED BY A SCANNING ELECTRON MICROSCOPE (SEM)

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