Effects of GO/Al₂O₃ and Al₂O₃ Nanoparticles on Concrete Durability against High Temperature, Freeze-Thaw Cycles, and Acidic Environments

Figure 14

spectrum of (a) FT-IR of the control sample, (b) concrete containing 2% Al₂O₃ nanoparticles, and (c) concrete containing 2% GO/Al₂O₃ nanoparticles.