10000 years cement
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2019
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Cement and Concrete Composites
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This review is focused on the long-term performance of cementitious materials in a repository for radioactive
waste. During the last few years, the disposal of disused sealed radioactive sources (DSRS) in a borehole type
repository has been studied by many countries. The borehole concept is particularly useful to dispose of spent
nuclear fuel and DSRS. In boreholes for DSRS, cementitious materials are intended to be used as structural
material, immobilization matrix and as backfill. The understanding of the performance of these materials is
essential to ensure the safety of the facilities during their required lifetime, from centuries to many thousands of
years, depending on the initial activity and half-life of the waste. This review approaches the behavior of the
cement from the hydration and hardening to the long-term processes that can affect its durability. Three main
causes of failure of repository-engineered barriers are recognized: a) the formation of a preferential pathway for
the migration of the contained radionuclides to the biosphere; b) loss of resistance and cohesion of the structural
cementitious material; and c) the increase in the corrosion processes of the metallic components of the structures
that affect the overall containment of the facility.
Como referenciar
FERREIRA, EDUARDO G.A.; MARUMO, JULIO T.; FRANCO, MARGARETH K.K.D.; YOKAICHIYA, FABIANO; VICENTE, ROBERTO. 10000 years cement: Can hydrated cement last as much as long-lived radionuclides?. Cement and Concrete Composites, v. 103, p. 339-352, 2019. DOI: 10.1016/j.cemconcomp.2019.05.016. Disponível em: http://repositorio.ipen.br/handle/123456789/30368. Acesso em: 18 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.