摘要
河南中东部地区为典型黄泛区,随着该地区基础建设的迅速发展,迫切需要对该地区粉土的物理力学性质进一步研究.本文通过筛分实验、液塑限实验和击实实验,基于土体的颗粒组成、液塑限、最大干密度和最优含水率指标,研究河南中东部区域黄泛区粉土的物理特性差异.结果表明:(1)河南中东部不同区域黄泛区粉土颗粒级配、液塑限存在明显差异,细粒含量差别显著,细粒含量越多液塑限越大;(2)该地区不同区域最大干密度基本相同,最优含水率有差异,说明粉土的最终压实度相近,最优含水率与细粒含量有关.
The central and eastern part of Henan is a typical Yellow River flood area.With the rapid development of the regional foundation construction,it is urgent to study the physical and mechanical properties of silty soil in this area.In this paper,through the screening experiment,liquid-plastic limit and compaction test,the physical properties of silty soil in the yellow flooded area of central and eastern regions of Henan Province were studied through the indicators of soil composition,liquid-plastic limit,maximum dry density,and optimal moisture content.The results show that：（1）There is a significant difference in the particle size distribution and liquid-plastic limit of the silt in the yellow-flood area in different regions of the central and eastern Henan Province.The fine-grain content is significantly different,and the more the content of fine particles the greater the liquid-plastic limit.（2）The maximum dry density in different regions is basically the same and the optimum moisture content is different,which indicate that the final compaction degree of silt is similar,and the optimal moisture content is related to fine grain content.
作者
文浩
尹俊红
韩长玉
赫中营
WEN Hao;YIN Junhong;HAN Changyu;HE Zhongying(School of Civil Engineering and Architecture of Henan University,Henan Kaifeng 475004,China)
出处
《河南大学学报（自然科学版）》
CAS
2018年第5期623-630,共8页
Journal of Henan University:Natural Science
基金
河南省自然科学基金项目(182300410150)
开封市科技发展计划项目(1601037)
关键词
黄泛区
粉土
液塑限
最大干密度
最优含水率
Yellow River flood area
silt
liquid plastic limit
maximum dry density
optimum water content
