| In the process of the soil body’s freeze and melt, the water and salts in the soil, will transport at a certain degree, the movement of the water and soil will give cause for the jelly bulge, the salt bulge and melting deposition of the soil body.The experiment use potassium sulfate solution, mixed I solution, mixed Ⅱ solution,the concentration all use5%add to the four soil sample.After experiment at the Freeze-thaw cycle test box,test the water,the SO42-the K+migration law.The experimental results show that:First:the water migate in the four soil sample all from the warm to the cold.Second:This research analyze the migration regulation of the humidity, salt within the soil congelation through indoor experiment in Shenyang and Kangping from four different quality of soil.The experiment results enunciation:In the process of freezing,the sulfuric acid ion and the potassium will move with the water,the trend is similar to the water transport. They are all from warm carry to cold carry,.But because of in the freezing process, the humidity content is large but all in the form of glacial, in its liquid water to ice of conversion process, the density of the salt aqua increases gradually high, inducted the proliferation mechanism of the salt,so make a small parts of saltses can’t stay around the humidity migration the position attain,and begin to dissfuse to the low position, the rest salt is in the former place until inspissate to crystallization, make the dissolubility re-distributes different from the water redistribute.Third: adding different salts,the potassium ion and the sulfuric acid ion in the four kinds of soils have the biggest tansport quantity in Kangping’s immigration of the even surface layer..AH that is dicided at the density and the characteristic of the soil. |
