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- W2914448411 abstract "Abstract In this study, the interaction between the major phase of cement clinker, C3S, and GO was explored to investigate its effect on the microstructures of G3S/GO composites at different GO dosages in a range of 0–0.05 wt%. The compressive strength of C3S/GO composites was tested and their microstructural developments were analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TG), nitrogen adsorption and 29Si solid-state nuclear magnetic resonance (NMR) techniques. The results show that the addition of GO can improve the compressive strength of C3S/GO paste up to 32.5% at 1 day. In addition, the incorporation of GO provided an increasing number of nucleation sites to form denser microstructure and refined the pore structure by reducing the total porosity and increasing the gel pores. In particular, the hydration degree was increased by approximately 20% at the age of 7 days when the GO dosage was in the range of 0.03–0.05 wt% as evidenced by TG and NMR results. The ratio of Q2/Q1 in C-S-H gel decreased slightly with the increased GO content, which was further corresponding to the decreased mean chain length of C-S-H gel. Therefore, the introduction of GO exerts a positive effect on the hydration of C3S, which provides essential supports to the hydration mechanism of GO in Portland cement matrix." @default.
- W2914448411 created "2019-02-21" @default.
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- W2914448411 date "2019-04-01" @default.
- W2914448411 modified "2023-10-10" @default.
- W2914448411 title "Effect of graphene oxide (GO) on hydration of tricalcium silicate (C3S)" @default.
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- W2914448411 doi "https://doi.org/10.1016/j.conbuildmat.2019.01.117" @default.
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