Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites

Effect of graphene oxide on the mechanical properties and the formation of layered double hydroxides (LDHs) in alkali-activated slag cement

“…% was approximately 20% after 7 days. However, this is inconsistent with the optimal content of GO in the OPC system, which is approximately 0.03% -0.04%, as reported in previous studies [14,19,28]. Interestingly, the data of the compressive strengths of all the specimens with the addition of GO showed a slight decreasing tendency, except for GM-1 at 28 days, quite different from the trend for OPC [13-14, 18-19, 28].…”

“…Interestingly, the data of the compressive strengths of all the specimens with the addition of GO showed a slight decreasing tendency, except for GM-1 at 28 days, quite different from the trend for OPC [13-14, 18-19, 28]. The compressive and flexural strengths are determined by the synergetic effect of the GO itself and the microstructures that are formed in its presence [14].…”

“…Of all of the carbon-based materials, two-dimensional (2D) graphene oxide (GO) sheets with an ultra-high dispersibility and a superior aspect ratio compared to other nano-carbon materials show a suitable performance in a cement matrix [13,17]. Previous studies [13][14]18] have shown that the introduction of a small amount of GO (0.05 wt. %) can increase the compressive strength by approximately 30% and the flexural strength by approximately 50%.…”

“…carbon nanofibres, carbon nanotubes and graphene, has offered an opportunity to improve the toughness of cement-based materials [13]. The combination of cement with a small amount of carbon material has an admirable impact on the mechanical behaviour of OPC and other inorganic cements [13][14][15][16]. Of all of the carbon-based materials, two-dimensional (2D) graphene oxide (GO) sheets with an ultra-high dispersibility and a superior aspect ratio compared to other nano-carbon materials show a suitable performance in a cement matrix [13,17].…”

Effect of chemically reduced graphene oxide on epoxy nanocomposites for flexural behaviors

“…Graphene based nanocomposites have been investigated for their superior electrical, thermal, and mechanical properties [10][11][12]. The incorporation of various nano-sized reinforcements into an epoxy matrix can maximize the advantages of structural composites [13][14][15]. Remarkable improvements in physical and mechanical properties of polymer composites have been reported upon the addition of a small amount of graphene [16][17][18].…”