Research on the Physiochemical Properties of Portland Cement and Its Fractal TheoryZHU Ming,HU Shu-guang,HE Zhen-hua (Key Laboratory for Silicate Materials Science and Engineering of Education Wuhan University of Technology,Wuhan 430070,China)The fractal dimension of the samples had been calculated according to the testing results of the particle size distribution,the research between physical-chemistry properties of Portland cement and the fractal dimension showed that the fractal dimension has linear correlation with specific surface area,and has inverter relations with median diameter and water demanded,it also has good relevance with mechanical strength.particle size distribution;physiochemical property;fractal theory