摘要
软粘土宏观性质与其微结构有着密切联系。对天津滨海新区软粘土先后进行了固结实验和扫描电镜实验,并对扫描图像进行处理,提取微观结构指标进行分析。结果显示,随着固结压力的增加,软粘土原有微观结构遭到强烈破坏,粘土粒度分维、颗粒表面起伏分维降低,颗粒分布分维增大。表现为颗粒粒径和表面起伏程度降低,颗粒排列出现明显的定向方向,密实度增大。
Macroscopic properties of soft clay are closely related to its microstructure.Based on the consolidation-test and SEM test on the soft clay in new coastal region of Tianjin,some microstructure indices drew from scanned image processing are analyzed.The SEM photos show that,with the increasing consolidation pressure,the original microstructure of the clay is severely damaged.Micro-index analysis of the clay under different consolidation pressures shows that the fractal dimension of clay particle size and particle surface undulation decrease with consolidation pressure increasing,but the fractal dimension of particle size distribution increases.It means reduce of the particle size and surface undulation,increase of the density,as well as particle arrangement orientation.
出处
《西北地震学报》
CSCD
北大核心
2011年第B08期143-147,共5页
Northwestern Seismological Journal
基金
中国科学院知识创新项目(KZCX2-YW-113,KZCX-YW-Q03-02113)
中国矿业大学青年科研项目(2009A029,2009A030)
中国矿业大学启航计划资助
关键词
软粘土
微观结构
固结
分维值
天津滨海新区
Soft clay
Microstructure
Consolidation
Fractal dimension
New coastal region of Tianjin
