Studying the physical property of clay soil by erosion effect of pollution environment

Pollution environment has important influence to soil physical property, however, the method and theory of pollution soil research are not mature. The paper states chemical reaction with pollution solution, inducing dissolve and deposit effect, which is the immanent cause of physical mechanic property of soil. The soil samples of Dalian region have been soaked in sulphuric acid solution and sodium chloride solution with different concentration for 60 days. Then they are respectively studied by density test, limit moisture content test and compact test, obtained the regulation of how solution with different concentration affect the physical property index of the clay soil. The tests state that the environment of acid and salt water has non-negligible affection on soil physical property, the test results provide basic for reveal the mechanism of erosion solution acting on soil.