Abstract
The images of micro pores in geomaterials were visualized using an atomic force microscope. The hollow parts of AFM-image showed void space by the comparison with SEM-image. The AFM-image was transferred into the binary image of void structure by threshold at the grading scale based on the pore-size distribution and effective porosity. We can derive the geometric information, such as perimeter, pore square and hydraulic radius, of the visualized pore image using image-processing. The AFM is useful for the visualization and quantitative analysis of micro pore in geomaterials.
