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  5. Multi-technology Investigation of the Atomic Structure of Calcium Silicate Hydrates

Multi-technology Investigation of the Atomic Structure of Calcium Silicate Hydrates

来源 :The 14th International Congress on the Chemistry of Cement ( | 被引量 : 0次 | 上传用户：JK0803_liuchao
【摘 要】
：
In this study, synthetic C-S-H samples were investigated to reveal the feature at atomic scale.Rietveld refinement was applied to high resolution X-ray scattering data, yielding the lattice constants
【作 者】
：
Guoqing Geng David A.Kilcoyne Chris.J.Benmore Paulo J.M.Monteiro 
【机 构】
：
Department of Civil and Environmental Engineering, University of California at Berkeley, United Stat
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
【发表日期】
：
2015年8期
【关键词】
：
C-S-H Atomic Configuration Rietveld Refinement NEXAFS PDF 
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　　In this study, synthetic C-S-H samples were investigated to reveal the feature at atomic scale.Rietveld refinement was applied to high resolution X-ray scattering data, yielding the lattice constants of the pseudo-crystal structure, as well as the crystallinity along three axes.Near Edge X-ray Absorption Fine Structure (NEXAFS) spectra was collected at calcium L3,2-edge.Evolution of calcium coordination symmetry were studied by investigating spectra characteristics.Pair Distribution Function (PDF) study yields the statistics of atom pair distribution.Coordination number of Ca and Si were obtained by integrating Radial distribution function.Atomic model based on dimeric structure were discussed and comnared with exnerimental data.
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