This paper presents evaluation of diffusion coefficient, passed charge, and compressive strength considering 3 substitution ratios of fly ash(0%, 30%, and 50%) and 3 different W/B ratios(37%, 42%, and 47%). Also, the relationships among diffusion coefficient, passed charge, and compressive strength are investigated focusing on the results at 28 days and 180 days. With increasing replacement ratio of FA and decreasing W/B, the resistances to chlorides(diffusion coefficient and passed charge) are improved. At 28 days and 180 days, linear relationship are observed between strength and resistance to chloride on the whole.