Mechanical behavior of multilayer GO carbon-fiber cement composites

Graphene oxide (GO) has attracted much attention due to its dispersibility in water, high aspect ratio and excellent mechanical properties. In this study, the mechanical behaviors of multilayer GO carbon-fiber cement composites were experimentally investigated. The experiments of compressive strength and the flexural tensile strength of the composites were performed. For the purpose comparison and explanation, the mechanical properties of GO cement and carbon-fiber cement were also investigated. The results show that the compressive strength of the GO carbon-fiber cement composite with adding 0.06% GO and 1% carbon-fiber was increased by 23.89%, whereas the increment of the flexural tensile strength of the composite was increased by 138.44%. The results were explained with respect to the mechanical behavior of GO cement specimens with incorporating different percentages of GO, and the microstructures of the composites observed by Scanning Electron Microscopy (SEM). The present study not only advanced our understanding of mechanical behaviors of multilayer carbon-fiber cements, but the results can be utilized for civil and transportation structures to improve the performance of the structures.