粘性土的微观的结构分析技术研究

重点介绍了工程粘性土微观结构研究方面的一些新技术、新成果和新发展，主要包括供扫描电镜（SEM）分析用的处理高含水量土样的冷冻刀切干燥法、定量评价粘性土微观结构的图象处理技术、测定粘性土粒间胶结物化学成分的EDX技术和无损伤探测土体内部结构的CT技术。

RESEARCH ON THE ANALYSIS TECHNIQUES FOR CLAYEY SOIL MICROSTRUCTURE

Microstructure of clayey soil is an important factor determining engineering properties of the clayey soil. Several latest techniques for analyzing microstructures of engineering clayey soil are presented, including the freeze-cut- drying method for preparing a soil specimen of high moisture content for analysis with scanning electronic microscopy (SEM), image processing technique for quantifying the microstructure of the soil, the application of the energy dissipate X-ray technique (EDX) in determining the interparticle chemical compositions, and the CT technique in monitoring the development of internal failure in soil under loading. These techniques provide a series of effective tools to analyze systematically the microstructure and internal failure evolution of engineering clayey soil.