▎ 摘　　要

This study investigated the high-temperature properties of cement pastes with graphene oxide (GO) agglomerates at temperatures of 105 degrees C, 200 degrees C, 300 degrees C, and 450 degrees C. Generally, at ambient temperatures, incorporating GO can refine the pore structures and crystal sizes of calcium hydroxide, which is beneficial for the thermal resistance of a cement paste. In this study, during heat treatment, it was found that the water bound in GO agglomerates is negligible (from conducting a weight loss analysis). The GO agglomerates suppress the pore structure coarsening of cement pastes. The pore structure is finer and the total porosity is reduced by 8.5% with incorporation of 0.04% (by weight) GO at 300 degrees C which is close to critical point of water. With incorporation of 0.04% by weight GO in cement pastes at 200 degrees C, 300 degrees C, and 450 degrees C, the residual compressive strengths are 9.28%, 12.63%, and 10.83% higher than that of a reference sample, respectively.