Abstract This study aims to investigate the change with temperature of the water content of the C-(A)-S-H of plain cement (PC) and Limestone Calcined Clay Cement (LC3). The water content was determined by various methods: thermogravimetric analysis (TGA), 1H-nuclear magnetic resonance (1H NMR), scanning electron microscopy in energy X-ray spectroscopy mode (SEM-EDS) and grey level in backscattered electron imaging (SEM-BSE). The comparison between TGA on dried pastes and 1HNMR on undried pastes indicates that about 75% of gel water is exchanged during the hydration stoppage. Moreover, the amount of gel water in the inner C-S-H determined by SEM-EDS is close to overall gel water content, indicating little difference in gel water between inner and outer product. SEM-BSE is not as accurate as the other methods. Overall, the water content decreases with temperature and it is very similar between PC and (LC3) despite the significant difference of Ca/Si ratio and Al content.

中文翻译：

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温度对普通硅酸盐水泥和混合水泥中CASH含水量的影响

摘要 本研究旨在研究普通水泥(PC)和石灰石煅烧粘土水泥(LC3)的C-(A)-SH含水量随温度的变化。水含量通过各种方法测定：热重分析 (TGA)、1H-核磁共振 (1H NMR)、能量 X 射线光谱模式的扫描电子显微镜 (SEM-EDS) 和背散射电子成像的灰度级 (SEM-疯牛病）。干糊状物的 TGA 与未干糊状物的 1HNMR 之间的比较表明，约 75% 的凝胶水在水合停止期间发生了交换。此外，SEM-EDS 测定的内部 CSH 中的凝胶水量接近整体凝胶水含量，表明内部和外部产品之间的凝胶水差异很小。SEM-BSE 不如其他方法准确。全面的，