Study on Compressive Properties of Cylindrical Graphene Oxide Cement-Based Composites

To investigate the effects of GO and age on the compressive strength, fracture propagation of cement-based composites. GO (0–0.06%) cement mortar cylinder specimens with different dosage (60 mm in diameter and 30 mm in height) were prepared, and static compression experiments were carried out on 3d, 7d, and 28d. The results show that the compressive strength increases as the age increases. With the increase of GO content, the compressive strength of cement-based composite first increases and then decreases. When the compressive strength of 3d and 7d cylinders reached the maximum, the GO content was 0.03%, which was increased by 19.3% and 23.3% respectively compared with the blank group. When the compressive strength of the 28d cylinder reaches the maximum, the GO content is 0.04%. Compared with the blank group, the improvement was 37.2%. At the same time, the addition of GO can effectively improve the stress during fracture generation, prevent fracture expansion, and thus enhance the mechanical properties of cement matrix composites.