The effects of different concentrations sulfate for erosion age on compressive strength, flexural weight analysis, density loss and visual appearances concrete specimens grades were investigated. Experimental studies carried out (M-25, M-30 M-35). Concrete immersed in concentration solution i.e. 4.0pH, 5.0pH 6.0pH. Reduction strength was noticed when the grade is increased from M-25 to M35. res...