The research of concrete durability in the environment with salt solution

Using common Portland cement and Portland cement,the test specimens whose water cement ratio is in range from 0.45 to 0.60 have been made.After having been corroded by seawater in accelerated corrosion experiment,basing on rule and cause of changes of strength and weight loss rate,experimental data has been provided for quantitative analysis of broken state.It has been showed that under the same condition,durability of slag Portland cement is better than that of Portland cement;when the corrosive coefficient of concrete member is equal to 0.8,it is in conformity with limit value of 25 percent strength loss in American ASTM standard.