Distribution Regularity and Characteristics of Corrosive Medium in Water Environment of Longdong Loess Plateau Area

Combined with the hydration test results of the Bailongjiang Water Diversion Project in Gansu province, the vertical and horizontal variation characteristics of corrosive substances in water samples were analyzed, and the corrosiveness of corrosive ions in the water environment in this area to steel structures, concrete structures and steel bars in reinforced concrete structures was preliminarily judged. The results showed that the main corrosive ions in the Loess Plateau area of Longdong were Cl^- and SO₄^2-, and the content of Cl^- and SO₄^2- decreased with the increase of sampling depth. The content of corrosive ions in most rivers spanned by the hydration profile was relatively high, and the corrosive ions in most water environments were weakly corrosive to the steel bars in reinforced concrete structures, but non-corrosive to concrete structures and steel structures.