The influence of ion-binder interactions on the durability of cement-based material

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Sustainable concrete structures, and elements which are durable, economical, and use industrial by-products are being designed with service lives longer than ever before. As this trend continues, understanding the performance of cementitious materials and their degradation mechanisms is increasingly becoming an important part of the design process and is the focus of this research proposal that accounts for the influence of environmental conditions, structural requirements, and material durability performance. Transport properties of concrete exposed to ions reflect the physical pore structure and the interaction between the ions and the binder. The interaction between chlorides and the binder affect the transport of ions and moisture and also affect the physical pore structure. Specific descriptions of transport properties which reflect changes to the microstructure upon exposure to ions is warranted to more completely understand the mechanism(s) of degradation and also to predict degradation of concrete over time.