Influence of graphene oxide additions on the mechanical properties of concrete

Abstract

Cementitious composite materials are widely used in major infrastructure applications, including dams, underground pipelines, and high-rise buildings. Although cement-based concrete has been commonly utilized in various structural foundations, its inherent brittleness and limited tensile strength remain a challenge. With recent advancements in materials science and nanotechnology, nano-sized additives have drawn significant interest from scientists and engineers due to their ability to modify the microstructure of cement composites. These nanomaterials can densify the cement matrix and enhance its mechanical properties.

This research aims to investigate the influence of graphene oxide on the mechanical properties of concrete, including compressive strength, split tensile strength, and flexural strength. In addition, the behavior of graphene oxide-reinforced concrete after exposure to high temperatures was studied. Graphene oxide was added in varying amounts of 0.04%, 0.08%, and 0.12% by weight of cement. The results indicated that the concrete containing the highest percentage of graphene oxide exhibited significantly improved compressive strength and flexural strength.