宁夏工程技术2024，Vol.23Issue(2)：160-167,8.
不同含盐量条件下硫酸盐渍土蠕变特性与微观孔隙变化
Creep Characteristics and Micro-Pore Structural Changes of Saline Sulfate Soil under Different Salt Contents
摘要
Abstract
In order to explore the creep characteristics and micro-pore structural changes of sulfate saline soil under different salt content conditions,a series of creep tests were conducted on sulfate saline soil samples from the Hongsipu area in Ningxia using a custom-made one-dimensional creep apparatus,and post-experiment soil samples were examined with a scanning electron microscope.The results indicated that after one-dimensional creep,the final creep content of the soil increased with the increase of salt content,and decreased with the decrease of temperature.The creep rate decreased over time.Moreover,with the increase in salt content and temperature,the soil experienced a longer decay creep phase before reaching a steady creep state.After one-dimensional creep,an increase in salt content led to a reduction in the number of large and medium pores and an increase in small and micro pores.The pores were predominantly elliptical in shape,exhibiting increased complexity and a tendency toward more complicated structures.Furthermore,the fractal dimension of the pores increased.关键词
硫酸盐渍土/一维蠕变/扫描电镜试验/微观结构Key words
sulfate saline soil/one-dimensional creep/scanning electron microscope(SEM)/micro-structure分类
建筑与水利引用本文复制引用
田思宇,李晓,张卫兵,刘臻祥..不同含盐量条件下硫酸盐渍土蠕变特性与微观孔隙变化[J].宁夏工程技术,2024,23(2):160-167,8.基金项目
宁夏自然科学基金项目(2021AAC03067) （2021AAC03067）
宁夏高等学校一流学科建设项目(NXYLXK2021A03) （NXYLXK2021A03）
自治区级大学生创新创业训练计划项目(S202210749102) （S202210749102）
