The purpose of this study is to investigate influence of using the recycled fine aggregate on properties of concrete and discuss its cause. From experimental results, it was found that the slump of concrete using recycled fine aggregate decreases, because recycled fine aggregate had a bigger volume of fine particles than natural fine aggregate with same grading in weight. There is a correlation between strength, depth of carbonation or shurinkage per unit volume of cement and a ratio of cement to total water. The total water is a sum of water content and total water absorbed in aggregate. This means that water absorbed in aggregate influences porosity of hardened concrete.