Study On Subgrade Treatment Technology Of Xinjiang Yili Saline Soil

Saline soil in Xinjiang area of Yili is a very special contains more salt in soil, and is particularly sensitive to the environment, by its very nature will change with the temperature, water and change. Make the saline soil area produce different forms of diseases, such as collapsibility, salt heaving, frost boiling, salinization and other diseases. If you do not take measures, greatly affecting the normal use of will of the road embankment. In order to control soil salinization, solve the salt expansion diseases of highway engineering, in the highway construction should strengthen the research, treatment measures of saline soil subgrade. Therefore, study on the saline soil subgrade treatment and technology.This paper proposes to solidified saline soil with lime, cement, and considering the effect of water, salinity and temperature on the curing of saline soil, experimental research was carried out on the saline soil. Use compaction, CBR, saturated unconfined compressive strength, water stability, freeze-thaw cycle, temperature shrinkage and SEM test to analyze the soil physical properties, solidified saline field road performance and microstructure of content. Given the number of freeze-thaw stability, anti frost resistance evaluation of stability coefficient of solidified saline soil properties, water stability coefficient is proposed as the evaluation index of water stability. Combined with the meet the basic indicators and cost factors: curing chlorine saline soil cement as a poor effect of roadbed filling; 6% lime curing chlorine saline soil as roadbed filler overall performance better.Research results of this paper can be used in road construction, disease prevention in Xinjiang area of different grade, also can be other regions except Xinjiang’s disease prevention and treatment of saline soil subgrade treatment to provide reference.