摘要
粘性土微观结构是土体的一个重要质量特征。在外界环境条件影响下,吹填土在宏观上所表现出来的各种特性,都是其内在微观结构发生变化的外在反映。因此,微观结构对土的性质变化起着十分重要的作用。本文以连云港地区吹填土为研究对象,对其沉积后微观结构进行了定量测试,获得结构单元体的等效粒径、丰度、定向频率和定向分维数等定量化数据,并对结构单元体大小、平面形态和定向性进行了分析,该研究为吹填土工程性质的评价和改善提供了重要依据。
The microstructure is an important quality characteristic of clay. The macro-properties are extrinsic reflection of change in intrinsic microstructure under the influence of environment. Therefore, microstructure plays a significant role on the property changing of soil. The quantitative tests of microstructure of dredger fill after sediment in Lianyungang have been performed in this paper, and equivalent diameter, abundance, direction frequency and direction fractal dimensions of structural unit have been gained. According to these quantitative data, we analyzed the size, plane shape and directionality of structural unit of dredger fills. It provides an important basis for evaluation and improvement of dredger fill in engineering properties.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2006年第3期124-128,共5页
Hydrogeology & Engineering Geology
基金
国家自然科学基金资助项目(49972089
40372122)
关键词
吹填土
微观结构
定量化
沉积
dredger fills
microstructure
quantitative
sediment
