In this study, copper slag reprocessing tailings (CSRT) were synthesized into geopolymers with 40%, 50% and 60% metakaolin. The evolution of compressive strength and microstructures of CSRT-based geopolymers in a marine environment was investigated. Except for compressive strength measurement, the characterizations of X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM) were included. It was found that marine conditions changed the Si/Al ratio in the sodium-aluminosilicate-hydrate (N-A-S-H) gel backbone, promoted the geopolymerization process, led to more Q⁴(3Al), Q⁴(2Al) and Q⁴(1Al) gel formation and a higher compressive strength of the geopolymers. This provided a basis for the preparation of CSRT-based geopolymers into marine concrete.

中文翻译：

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海洋环境中基于炉渣尾矿的地质聚合物的表征

在这项研究中，将铜渣后处理尾矿（CSRT）合成为具有40％，50％和60％偏高岭土的地质聚合物。研究了基于CSRT的地质聚合物在海洋环境中的抗压强度和微观结构的演变。除抗压强度测量外，还包括X射线衍射（XRD），傅立叶变换红外光谱（FTIR），核磁共振（NMR）和扫描电子显微镜（SEM）的表征。发现海洋条件改变了铝硅酸钠水合物（NASH）凝胶骨架中的Si / Al比，促进了地聚过程，导致更多的Q ⁴（3 Al），Q ⁴（2 Al）和Q ⁴（ 1个Al）凝胶的形成和较高的抗压强度。这为将基于CSRT的地聚合物制备为海洋混凝土提供了基础。