%0 Journal Article %A Ilija Plecas and Uranija Kozmidis-Luburic and Radojica Pesic %D 2011 %J International Journal of Physical and Mathematical Sciences %B World Academy of Science, Engineering and Technology %I Open Science Index 52, 2011 %T Mathematical Modelling of Transport Phenomena in Radioactive Waste-Cement-Bentonite Matrix %U https://publications.waset.org/pdf/10606 %V 52 %X The leaching rate of 137Cs from spent mix bead (anion and cation) exchange resins in a cement-bentonite matrix has been studied. Transport phenomena involved in the leaching of a radioactive material from a cement-bentonite matrix are investigated using three methods based on theoretical equations. These are: the diffusion equation for a plane source an equation for diffusion coupled to a firstorder equation and an empirical method employing a polynomial equation. The results presented in this paper are from a 25-year mortar and concrete testing project that will influence the design choices for radioactive waste packaging for a future Serbian radioactive waste disposal center. %P 536 - 538