摘要
作者对由西安黄土掺加３％Ｎａ＿２ＳＯ＿４而成的硫酸盐渍土，在不同初始干密度和冻融循环条件下的盐胀规律进行了试验研究。结果表明：冻融循环作用下的盐胀具有累加性；增加值具有随冻融循环次数增加而递减的趋势；盐胀率与初始干密度的关系为一二次抛物线，存在一个盐胀率最低的区间。
The authors proceeded experimental research on salt heaving of sulphate treated soilwith different dry densities． The sample is made by adding 3％ Na_2SO_4 in Xi＇an—Loess． Theconclusion stated that： salt heaving value is accumulated under freezing and thawing cycle；with increase of freezing and thawing cycle，the increment of salt heaving is reducedgradually； under freezing and thawing cycles，the variation of salt heaving ratio with initialdry density of sulphate treated soil is of parabolic，with a range of minimum salt heavingratio．
出处
《冰川冻土》
CSCD
北大核心
1994年第3期245-250,共6页
Journal of Glaciology and Geocryology
基金
属中国科学院兰州冰川冻土研究所冻土工程国家重点实验室基金
关键词
硫酸盐渍土
盐胀
冻融循环
密度
： sulphate treated soil，salt heaving，freezing and thawing cycle
