Micro-mechanical properties and multi-scaled pore structure of graphene oxide cement paste: Synergistic application of nanoindentation, X-ray computed tomography, and SEM-EDS analysis
Micro-mechanical properties and multi-scaled pore structure of graphene oxide cement paste: Synergistic application of nanoindentation, X-ray computed tomography, and SEM-EDS analysis
复制标题
氧化石墨烯水泥浆体的微观力学性能和多尺度孔隙结构：纳米压痕、X射线计算机断层扫描和SEM-EDS分析的协同应用
DOI：
10.1016/j.conbuildmat.2018.05.229
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发表时间：
2018-08-10
影响因子：
7.4
通讯作者：
Xing, Feng
中科院分区：
文献类型：
--
作者：
Long, Wu-Jian;Gu, Yu-cun;Xing, Feng
In this study, the microstructure and micromechanical properties of graphene oxide (GO) cement-based materials are investigated. Nanoindentation with statistical deconvolution was used to determine the elastic properties of constituent phases. Besides, combined with scanning electron microscopy (SEM) equipped with energy-dispersive spectrometer (EDS) and backscattered electrons (BSE), each phase of hardened cement paste was identified and quantified as well. X-ray computed tomography (XCT) microscope was applied to determine the morphology of micrometer-size pores, while mercury intrusion porosimetry (MIP) was used to capture the volume fraction of smaller pores (nano-scale). The combined use of XCT and MIP offered an effective approach for further understanding the effect of GO on pore structure at multi-scale. The synergistic analysis of microstructure and micromechanical properties at multi-scale provides valuable information towards the material design of cement-based materials with nanomaterials. (C) 2018 Elsevier Ltd. All rights reserved.
