- Author
-
Pommersheim, J. M.
|
Clifton, J. R.
- Title
- Expansion of Cementitious Materials Exposed to Sulfate Solutions.
- Coporate
- Bucknell Univ., Lewisburg, PA
National Bureau of Standards, Gaithersburg, MD
- Book or Conf
- Material Research Society Proceeding. Volume 333. [date unknown],
363-368 p.,
- Keywords
-
concretes
|
radioactive waste
|
kinetics
- Abstract
- Disposal of low-level radioactive waste in concrete vaults buried underground is being considered in the United States and a potentially significant degradation process is sulfate attack. The results of experimental studies and of modeling of the kinetics of sulfate attack of cement-based materials are given. It was concluded that the expansion process involves a two-stage mechanism. The first stage is likely to be diffusion controlled and the second stage appears to be acceleratory due to the development and spread of cracks.