SOAKING EXPERIMENTAL STUDY ON CONCRETE STRUCTURE OF RESISTING CHLORIDE ION ERODING UNDER DIFFERENT STRESS STATES

By way of soaking in laboratory, it is studied the laws of the chloride ion diffusion and distribution in the concrete with the different strength grades under the action of the stress and chlorideion eroding, through rapid chloride ion eroding experiments on the Portland cement specimens with the different water cement ratios on condition of the different pressure and tensile stress.It can be drawn that the chloride ion content will decrease with the increase of the compressive stress at the same depth.But it will increase with the increase of the tensile stress． However, this effect will gradually weaken with the increases of the cover thickness.High strength concrete is more sensitive to the stress in resisting chloride ion eroding.And the distribution of the chloride ion at the different depth under the different stress states in the concrete can be known from the laws, which is of benefit to the analysis of steel corrosion rate and deducing the chloride ion diffusivity．