Abstract
The Nuclear Regulatory Commission (NRC) regulations 10 CFR Part 61, “Licensing Requirements for Land Disposal of Radioactive Waste”, regulate the disposal of radioactive waste and provide, among other stipulations, that class B and C low-level radioactive waste (LLW) must be stabilised. This is intended to ensure that solidified waste does not structurally degrade and cause subsidence in the disposal unit’s cover system. It is reasoned that deterioration of the waste form could adversely affect the stability of the burial site and lead to the release of radionuclides to the environment. Because of its apparent structural integrity, cement has been widely used as a binder to solidify LLW. However, the resulting preparations called pozzolanic cements are susceptible to failure due to the actions of stress and environment.
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