Several repository concepts have been proposed for the disposal of radioactive wastes, some of which include argillaceous (clay-rich) host rocks and cementitious engineered barriers. The presence of hyperalkaline cement pore-fluid results in the destabilization of primary minerals in argillaceous rocks, leading to alteration at the interface between cement/concrete and repository host rock. This phenomenon has implications for radionuclide transport and safety assessment. Data on cement-mudrock interactions from experimental, analogue, and modelling studies have been reviewed, and remaining areas of uncertainty identified. Although a reasonably good understanding of the key processes has been acquired, there are some areas in which uncertainty remains, in particular: system evolution at temperatures above 25 °C; the kinetics of secondary mineral growth; the extent of pore-clogging due to secondary mineral formation; the degree to which predicted porosity reduction could impede contaminant migration; and the effect of host rock alteration on contaminant sorption. A multi-disciplinary programme of work is likely to be the most productive to elucidate further the key processes and how they operate over different spatial and temporal scales. The ongoing acquisition of geochemical data for model construction, and the testing of geochemical models against analogue and laboratory data, should reduce some of the uncertainties associated with predicting repository evolution, thereby aiding safety case development.

已经提出了一些处置放射性废物的处置库概念，其中一些包括泥质（富含粘土的）基质岩石和胶结的工程屏障。高碱性水泥孔隙流体的存在导致泥质岩石中主要矿物的失稳，从而导致水泥/混凝土与储层宿主岩石之间的界面发生变化。这种现象对放射性核素的运输和安全评估具有影响。对来自实验，模拟和建模研究的水泥-泥岩相互作用的数据进行了审查，并确定了不确定性的剩余领域。尽管已经获得了对关键过程的相当好的理解，但是在某些领域仍然存在不确定性，尤其是：温度高于25°C时系统的演变；次生矿物质生长的动力学；由于次生矿物质形成而造成的孔隙堵塞程度；预测的孔隙率降低在多大程度上可以阻止污染物迁移；以及母体蚀变对污染物吸附的影响。多学科的工作计划可能最有效率，以进一步阐明关键过程及其在不同时空尺度上的运作方式。正在进行的用于模型构建的地球化学数据的获取，以及针对模拟和实验室数据的地球化学模型的测试，应减少与预测储存库演变相关的一些不确定性，从而有助于安全案例的开发。预测的孔隙率降低在多大程度上可以阻止污染物迁移；以及母体蚀变对污染物吸附的影响。多学科的工作计划可能最有效率，以进一步阐明关键过程及其在不同时空尺度上的运作方式。正在进行的用于模型构建的地球化学数据的获取，以及针对模拟和实验室数据的地球化学模型的测试，应减少与预测储存库演变相关的一些不确定性，从而有助于安全案例的开发。预测的孔隙率降低在多大程度上可以阻止污染物迁移；以及母体蚀变对污染物吸附的影响。多学科的工作计划可能最有效率，以进一步阐明关键过程及其在不同时空尺度上的运作方式。正在进行的用于模型构建的地球化学数据的获取，以及针对模拟和实验室数据的地球化学模型的测试，应减少与预测储存库演变相关的一些不确定性，从而有助于安全案例的开发。