Electron microscopy of heavy metal waste in cement matrices
Electron microscopy of heavy metal waste in cement matrices
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水泥基体中重金属废物的电子显微镜观察
DOI：
10.1007/bf00580129
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发表时间：
1990
影响因子：
4.5
通讯作者：
W. W. Lam
中科院分区：
文献类型：
--
作者：
D. Ivey;R. B. Heimann;R. B. Heimann;M. Neuwirth;S. Shumborski;D. Conrad;R. Mikula;W. W. Lam
普通波特兰水泥混合有不同数量的金属铬的硝酸盐（Cr（NO3）3）的形式，以模拟工业废物，已被研究的电子显微镜技术，即扫描电子和扫描透射电子显微镜。三价铬被发现是化学结合在所有的水化水泥相，并出现在硅酸钙水合物（C-S-H），这是水化的主要产品中的硅的替代。铬也集中在多晶富钙铬相。
Ordinary Portland cements mixed with various amounts of chromium metal in the form of nitrates (Cr(NO3)3), to simulate industrial waste, have been studied by electron microscopy techniques, i.e. scanning electron and scanning transmission electron microscopy. Trivalent chromium was found to be chemically incorporated in all hydrated cement phases, and appeared to substitute for silicon in calcium silicate hydrate (C-S-H), which is the major product of hydration. Chromium was also concentrated in polycrystalline Ca-Cr-rich phases.