▎ 摘　　要

In recent years, the autoclaved aerated concrete (AAC) has been widely used in the building construction indus -try, especially for construction of infill walls. However, the AAC suffers from several drawbacks such as low com-pressive and tensile strength, high water absorption as well as insufficient resistance against impacts. To address such issues, this study evaluates the mechanical properties of the AAC blocks in which, the cement has been re-placed with nano-graphene. For this purpose, various replacement ratios (0.2, 0.4, and 0.8) were selected and different tests such as compressive and tensile strength (cylindrical specimens with the size of 10 x 20 cm), im-pact resistance and water absorption (cubic specimens), scanning electron microscope (SEM) and X-ray diffrac-tion (XRD) were carried out. Promisingly, the results indicate that incorporation of the nano-graphene improves the compressive and tensile strength as well as the impact resistance by 45, 81, and 130% compared to the con-trol specimen. Moreover, the water absorption of the specimens was reduced up to 61%. Based on the SEM re-sults, inclusion of the NG in the AAC, makes the grains stick together firmly and also, downsizes the grains by 30%.