硅酸盐学报2012，Vol.40Issue(5)：691-695,5.
利用同步辐射X射线小角散射研究超低水灰比水化水泥早期微结构
Early Age Microstructure of Hydrating Cement with Ultra-Low Water to Cement Ratio Investigated by Synchrotron SAXS
摘要
Abstract
Synchrotron small angle X-ray scattering（SAXS） was applied for non-destructive measure of fractal structure of hydrating cement.Early age microstructure of the cement with ultra low water to cement ratio was investigated.Fractal structure of the hydra-tion products indicates that nano C-S-H particles are packed randomly.Double fractal results from two types of structural self-similarity locating in the inner and outer hydration products respectively.Packing of the high density C-S-H within the inner hydra-tion productions is dense,and packing density degrease with hydration,while packing of the low density C-S-H within the outer hydra-tion productions is looser,and packing density also degrease with hydration.The densest packing of a layer of nano C-S-H particles is produced at the induction period of cement hydration.At acceleration period,packing density of the layer degreases with hydration of cement.However,evolution of packing density of the layer becomes flat after acceleration period of cement hydration.关键词
同步辐射X射线小角散射/硅酸盐水泥/分形/微结构/早龄期水化Key words
synchrotron small angle X-ray scattering/Portland cement/fractal/microstructure/early age hydration分类
化学化工引用本文复制引用
沈业青,邓敏,陆安群..利用同步辐射X射线小角散射研究超低水灰比水化水泥早期微结构[J].硅酸盐学报,2012,40(5):691-695,5.基金项目
高性能土木工程材料国家重点实验室开放基金 （）
国家重点基础研究发展计划（2009CB623105）资助 （）
