A Method to Calculate Porosity of Loess Based SEM and its Application

Abstract:

Research the structure changes before and after collapsible experiment of loess microstructure. Using artificial preparation methods prepared different moisture samples of Liaoxi loess. Do collapsible test and Scanning electron microscope test with the prepared samples. According to Digital Terrain Model theory, three-dimensional porosities were calculated based on gray scale information from the SEM images extracted by MATLAB. The results are shown following as: the microstructure of loess samples is getting dense, the average number of pore of samples obviously increases and the pore area decreases after the sample is collapsed. The distribution before and after the collapsibility of gray value has certain regularity. The before one has double peaks, large distribution. The after one has single peak, concentrate distribution and meets normal distribution.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 179-182
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.179
• Online since: December 2012
• Authors: Peng Ran Song, Chang Ming Wang
• Keywords: Collapsibility, Liaoxi Loess, Microstructure, SEM, Volumetric Porosity

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