The effect of a cement–bentonite grout material was studied through glass/steel interactions. Hence, two experimental mock‐ups, consisting of a “sandwich” of four materials in contact, stainless steel/AVM glass/AVM glass/P285NH steel, were leached by Callovo–Oxfordian poral water at 70°C for 1 year. CBG material was added for one experiment, whereas the second one was CBG‐free. Chemical and structural analyses (scanning electron microscopy–energy‐dispersive X‐ray spectroscopy, Raman), performed mainly at the AVM glass/P285NH interface, evidenced a comparable alteration with and without the CBG. Indeed, its presence did not impact the gel formation by hydrolysis/condensation mechanism. For both experiments, the glass alteration rates corresponded to , highlighting a kinetic rate drop after a 1‐year leaching period. However, the CBG impacted the pH solution initially buffered by the claystone, promoting precipitation of Mg/Fe‐rich silicates on the gel surface. Regarding P285NH corrosion, no major difference was observed with the CBG. Steel corrosion layers in both experiments were Si‐free, and the corrosion rates were similar. Therefore, after 1 year at 70°C, the CBG had a limited effect on the glass/carbon steel interactions.

中文翻译：

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AVM核玻璃/钢/粘土系统在70°C下由有或没有水泥-膨润土灌浆的Callovo-Oxfordian口水改变了

通过玻璃/钢之间的相互作用研究了水泥－膨润土灌浆材料的作用。因此，用卡洛沃-牛津的唾液在70°C的条件下浸出了两个实验模型，其中包括四种接触材料的“三明治”，即不锈钢/ AVM玻璃/ AVM玻璃/ P285NH钢。在一项实验中添加了CBG材料，而第二项实验不含CBG。化学和结构分析（扫描电子显微镜–能量色散X射线光谱仪，拉曼光谱）主要在AVM玻璃/ P285NH界面上进行，证明了有和没有CBG时的可比变化。实际上，它的存在不影响通过水解/缩合机理的凝胶形成。对于这两个实验，玻璃变化率对应于，强调了1年浸出期后动力学速率下降。但是，CBG会影响最初由粘土缓冲的pH溶液，从而促进凝胶表面富含Mg / Fe的硅酸盐的沉淀。关于P285NH腐蚀，CBG没有观察到主要差异。在两个实验中，钢腐蚀层均不含硅，并且腐蚀速率相似。因此，在70°C下放置1年后，CBG对玻璃/碳钢相互作用的影响有限。