Interfaces between cementitious materials and host-rock are often found. Such interfaces might lead to chemical and structural alteration of both materials. In the case of carbonate rocks, cement carbonation can lead to structural failure. This study characterized the long-term performance of interfaces between Ordinary Portland Cement (OPC) and carbonate rocks (limestone and marl). Rocks and cement were studied for their solid phase characterization, pH dependence leaching test, and semi-dynamic mass transport tests. Experimental results were used in the development of a geochemical reactive transport model to simulate the evolution of OPC-rock interfaces. Simulations show the propagation of a carbonation front from the interface into the cementitious materials and the redistribution of phases accompanied with volume changes, with the rate and extent dependent on the rock type.

胶结材料和围岩之间的界面经常被发现。这种界面可能导致两种材料的化学和结构改变。在碳酸盐岩的情况下，胶结物碳化会导致结构破坏。本研究描述了普通硅酸盐水泥 (OPC) 和碳酸盐岩（石灰石和泥灰岩）之间界面的长期性能。研究了岩石和水泥的固相表征、pH 依赖性浸出试验和半动态传质试验。实验结果用于开发地球化学反应输运模型，以模拟 OPC-岩石界面的演变。模拟显示碳化前沿从界面传播到胶凝材料以及伴随体积变化的相重新分布，