The anchors for the infill shear wall should be designed in consideration of the condition of construction site. In this study, the experiment was carried out to make clear the strengthening effects of the infill shear walls constructed with actual specifications using resin type anchors. In this experiment, the following parameters were considered. 1) The amount of anchors, 2) The compressive strength of concrete of the infill wall panel, 3) The sectional configuration of the boundary columns, 4) The additional shear walls with or without finish mortar. Also, the estimation method for the ultimate strength of the infill shear wall was investigated. The following conclusions were obtained. 1) The ultimate flexural strength of the infill shear wall is properly estimated in consideration of the effectiveness of the anchors. 2) In cases of a small amount of anchors and high compressive strength of the infill wall panel, its ultimate shear strength estimated by the guide line for the seismic retrofit in Japan is underestimated. 3) The ultimate shear strength estimated by the modified formulas good coincides with the tested value.
