ABSTRACT
Long-term integrity is an important issue required for cementitious materials. It is essential to understand the long-term behavior of the materials to assure the sufficient performance. The lifetime should be over thousands of years in extreme cases, such as use in the nuclear waste encapsulation and disposal facilities. In this study, an electrical acceleration technique for degradation of cementitious materials under exposure to water has been developed. The effect of electrical leaching action on the property of hydrated cement samples, which are simulated as nuclear waste forms containing Cs and Sr, has been investigated. The results showed that a higher current density resulted in a faster leaching process on behavior of https://www.w3.org/1998/Math/MathML"> C s N O 3 https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429227196/8b5c0a5d-ddea-4c88-8eea-7152f7afb008/content/eq11201.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> and calcium aluminate phase, and that the described leaching acceleration technique could simulate a natural progression in the leaching phenomena depending on the time spent in the device at a constant current density.
