Experimental Study on Mechanical Properties of Graphene Oxide Concrete

Abstract

To study the influence of different water-cement ratios and graphene oxide doping amounts on the mechanical properties of concrete. In this test, graphene oxide concrete with 4 water-cement ratios (0.35, 0.38, 0.41, 0.44) and six graphene oxide dopings (0, 0.02%, 0.04%, 0.06%, 0.08%, 0.1% (cement mass)) were prepared for mechanical properties. The results show that graphene oxide has a significant enhancement effect on the mechanical properties of concrete. As the water-cement ratio increases, the compressive strength and splitting strength of concrete show parabolic changes that first rise and then fall. Under the condition of water-cement ratio of 0.38, the concrete performance when graphene oxide dosages of 0, 0.02%, 0.04%, 0.06%, 0.08% and 0.1% were tested, and the compressive strength was increased by 10.11%, 15.81%, 22.78%, 30.04% and 24.48%, respectively, and the split tensile strength was increased by 3.87%, 6.25%, 18.75%, 27.97% and 22.02%, respectively. When the graphene oxide doping amount is 0.08%, the mechanical properties of the test piece are optimal.