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Carbonation Behavior of Calcium Aluminate Cements with Additions of Silica

机译:添加二氧化硅的铝酸钙水泥的碳酸化行为

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In this research different formulations of calcium aluminate cements (CAC) pastes with 51 and 71 wt% (wt%-percentage by weight) Al_2O_3 were made at 0.4 water to cement ratio (W/C) with additions of 0 and 20 wt% silica. Both the raw cement powders and their corresponding samples after hydration were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), density and compression tests. Samples were exposed to 20 °C in a furnace open to air, for 3, 4 and 7 days with a concentration of CO_2 of 4% and relative humidity of 70%.
机译:在本研究中,在0.4水至水泥比(W / C)下,在0.4水中加入0和20wt%二氧化硅,将铝酸钙水泥(CAC)浆料(CAC)浆料的不同配方用51和71重量%(重量%)(wt%-31重量%),加入水泥比(w / c)。 。通过扫描电子显微镜(SEM),X射线衍射(XRD),密度和压缩试验,将原料水泥粉末及其相应的样品进行了表征。将样品暴露于20℃,在向空气开放的炉中,浓度为3,4和7天,浓度为4%,相对湿度为70%。

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