化学改性法处理盐渍土地基试验研究  

The Test Study of Salty Soil Foundation Treatment with Chemical Modified Method

作　　者：殷帛成[1] 顾强康[1] 徐桑振[1] 李强[2] 屈波[1] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038 [2]沈空勘察设计院,辽宁沈阳110015

出　　处：《施工技术》2013年第13期52-55,共4页Construction Technology

摘　　要：许多处理过的盐渍土地基会发生二次盐渍化从而导致路基再次出现盐渍土病害,而地下水含盐量大则是土体发生二次盐渍化的根本原因。首先将土样置于一定浓度的盐溶液中进行毛细水上升试验以模拟实际二次盐渍化过程,之后进行盐胀试验测量土体的盐胀率,将试验土样的压实度、CaCl2掺量、Na2SO4水溶液浓度设为控制变量,通过试验数据的对比分析得出这3个因素对使用CaCl2抑制硫酸盐渍土地基二次盐渍化效果的影响。Much treated salty soil of highway foundations often occurs secondary salinization and causes saline soil diseases again.The fundamental reason is the excessive groundwater salinity.In order to study the impact of the effect of using CaCl2 to inhibit the secondary salinization of sulphate salty soil ground,the soil compaction,CaCl2 dosage and Na2SO4 solution concentration will be set to the control variables.This paper simulated the process of secondary salinization by doing capillary water rise tests and detected salty inflation rate of the soil by doing salt expansion tests.

关 键 词：地基 盐渍土 盐胀率 硫酸盐 氯化钙 试验 

分 类 号：TU448[建筑科学—岩土工程]