Abstract
The micro-structure of soil body is considered to determine its macro-characters. Meanwhile, the grey level that SEM images present is regarded to have a close correlation with microscopic distribution of the soil.Thus, based on GIS, the SEM images of solidified sludge (SS) with different cement content are studied and quantitatively analyzed in this paper. 3D porosities are extracted as the micro-perspective research methods for SS, and the extracted results are compared with the soil test ones to analyze the errors. Meanwhile, shearing strength,moisture content, dry density of different samples are compared with estimation results. Conclusion is drawn that despite the minor errors between estimated results and soil test ones, quantitative estimate of 3D Porosity is a feasible way to offers technical parameters for soil mechanics research, as well as to instruct the construction.
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