Abstract:Through comparison analysis of frost resistant property of concrete under 0, 010, 025, 050, 075 times design strength pressure stress states, the relation between pressure stress and frost resistant property of concrete was found. It was concluded that the concrete freeze thaw cycle life will increase with the increase of concrete pressure stress when the concrete pressure stress ratio is 010050, but when the stress ratio increases to 050075, the concrete freeze thaw cycle life will deduce with the increase of concrete pressure stress. Approaching the damage, the higher the stress, the relative dynamic elastic modulus decreased faster, the freeze thaw damage is in shorter time. Meanwhile it was found that the concrete surface spalling damage has no obvious relationship with pre stressed capacity, but is relative to freeze thaw cycle times. The concrete frost resistant forecast model was established at the different pressure stress states finally. Through calculating and contrast, it is known that the model is useful for engineering.