Browse/search for people

Publication - Dr Keith Hallam

    In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1:

    Corrosion in water vapour

    Citation

    Stitt, M, Paraskevoulakos, H, Banos, A, Harker, N, Hallam, K, Davenport, A, Street, S & Scott, T, 2017, ‘In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1: Corrosion in water vapour’. Scientific Reports, vol 7.

    Abstract

    Uranium encapsulated in grout was exposed to water vapour for extended periods of time. Through synchrotron x-ray powder diffraction and tomography measurements, uranium dioxide was determined the dominant corrosion product over a 50-week time period. The oxide growth rate initiated rapidly, with rates comparable to the U + H2O reaction. Over time, the reaction rate decreased and eventually plateaued to a rate similar to the U + H2O + O2 reaction. This behaviour was not attributed to oxygen ingress, but instead the decreasing permeability of the grout, limiting oxidising species access to the metal surface

    Full details in the University publications repository