The use of polymeric materials in civil construction makes possible original bonding processes because they have good adhesion. In this paper the bond between fresh/hardened concrete was made using epoxy resins in aqueous solution. Also the incorporation of one filler in the epoxy resins was analyzed. This study had two phases. n the first were conducted two shear tests - slant and direct. In the second phase were produced concrete with different strength classes by varying the ratio W/C - 0.6, 0.55 and 0.3. The results for the first phased showed that the direct shear test was the most appropriated. It was found in both phases mixed failures (type II). The use of mineral fillers also proved beneficial. This study also demonstrated the importance of water in the adhesion. The best water-cement ratio was 0.55, revealing the best balance between the porosity and the amount of water.