水泥石微孔界面结构及其对浆体性能的影响

Micropore Surface Structure and Its Effects on Properties of Cement Paste

采用Ｘ射线小角散射技术对水泥石中微孔孔界面结构，特别是孔界面的分维进行了实验研究，并对这些结构参数对水泥石比表面积和强度的影响作了分析讨论．研究表明：水泥石中的微孔界面不具有分明的边界，而是有约５×１０－１０ｍ的过渡层；水泥石中微孔界面具有分形结构特征，界面分形维数接近于３；水泥石的抗弯、抗压强度及比表面积等均与微孔界面分维存在较好的联系．

An experimental study on the structure of micropore surface,especially the fractal dimension in cement paste is made by using small angle X ray scattering.The effects of micropore surface structure on cement paste′s specific surface area and strength are also discussed.The experiment shows that the pore surface in cement paste is rough and fractal.The thickness of pore surface transition zone is about 5×10 -10 m,and fractal dimension is about 3.Sound correlations between bend strength,compressive strength,specific surface area and micropore surface fractal dimensions have been found.