南沙吹填土物相结构特性分析研究  

Analysis of phase structure characteristics for dredger fill from Nansha

作　　者：王婧[1,2,3] 董志良[3,4] 莫海鸿[2] 李晋骅 彭浩[2] 

机构地区：[1]中交四航工程研究院有限公司,广东广州510230 [2]华南理工大学土木与交通学院,广东广州510641 [3]中交交通基础工程环保与安全重点实验室,广东广州510230 [4]中交四航局第二工程有限公司,广东广州510300

出　　处：《水运工程》2015年第3期36-40,共5页Port & Waterway Engineering

基　　金：中交交通基础工程环保与安全重点实验室科研资助项目(Y2013D27)

摘　　要：通过现场取南沙吹填土样,室内开展粒度测试、物相分析、微观结构、元素含量、比表面积分析,并通过土工试验测试基本物理力学指标。从物理至化学、宏观至微观的角度综合分析了南沙吹填土物相结构特性。试验结果表明:吹填土以白云母和石英为主;微观结构为絮凝片状;O、Si元素的质量分数多;比表面积在黏土矿物中偏小,微电场及结合水膜形成相对较弱。Using the dredger fill sample from Nansha area, we carry out a series of tests in laboratory for the grading, phase, microstructure, element content, and specific surface area analysis. We also obtain the basic physical and mechanical indices by geotechnical experiment. Through comprehensive analysis from the views of physics to chemistry and by the macro way to micro way, we obtain the phase structure characteristics of dredger fill from Nansha area. Test results show that dredger fill is mainly of muscovite and quartz; microstructure appears as flocculation plate; the mass fraction of elements 0 ＆ Si constitute the majority. The specific surface area is less for clay minerals, so it causes relatively weak minute electric field and combined water film.

关 键 词：吹填土 物相 结构特性 微观 

分 类 号：U655.54[交通运输工程—港口、海岸及近海工程]