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Revealing the dependence of the physiochemical and mechanical properties of cement composites on graphene oxide concentration

机译：揭示水泥复合材料的理化和机械性能对氧化石墨烯浓度的依赖性

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This paper presents a comprehensive study to evaluate the influence of graphene oxide (GO) concentration on the physiochemical and mechanical properties of cement mortar composites. Scanning electron micrographs (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR) characterizations were performed to understand the correlation between physicochemical and observed axial tension and compression properties of GO–cement mortar composites. The results show considerable concentration dependence, with the optimum concentration of 0.1% GO that increases the tensile and compressive strength of the composite by 37.5% and 77.7%, respectively. These results are explained by the stronger bonding of calcium silicate hydrate (C–S–H) components in the cement matrix in the presence of GO sheets and the dependence of their dispersions and possible aggregation.
机译：本文提出了一项综合研究，以评估氧化石墨烯（GO）浓度对水泥砂浆复合材料的理化和力学性能的影响。进行了扫描电子显微镜（SEM），能量色散X射线光谱（EDX），X射线衍射（XRD），热重分析（TGA）和傅里叶变换红外光谱（FTIR）表征，以了解理化与化学反应之间的关系。观察到GO-水泥砂浆复合材料的轴向拉伸和压缩性能。结果显示了相当大的浓度依赖性，最佳浓度为0.1％GO可使复合材料的拉伸强度和压缩强度分别增加37.5％和77.7％。这些结果可以通过在存在GO板的情况下水泥基体中水合硅酸钙（C–S–H）组分之间更牢固的键合以及它们的分散性和可能的​​聚集作用来解释。

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