Experimental Study on the Dynamic Characteristices of Sulfate on Wind Sediment Under Cyclic Load
With the increasing amount of desert highway construction,it is particularly urgent to re-search the dynamic characteristics of wind sediment subgrade under vehicle load.Especially with groundwater evaporation,the dynamic characteristics of salty wind sediment caused by salt in ground-water moving to the surface are unclear.Through the indoor dynamic triaxial tests,the dynamic char-acteristics of wind sediments were studied under fifteen pairs of different surrounding pressures and partial stresses and three kins of salt contents.The results show that,with the increase of the partial stress,the dynamic rebound modulus is increasing gradually under the surrounding pressure.Under all partial stress conditions,when the salt content is increased from 0.0％ to 6.0％,the dynamic re-bound modulus of the wind sediment maintains a trend of first increasing,then decreasing,and then increasing with the increase of salt content.At each salt content condition,the dynamic rebound mod-ulus all increase with the increasing of bias stress.Especially when the salt content is 6％,the partial stress has a significant impact on its dynamic rebound modulus.
万方数据
维普
