Effect of thermo-coupled processes on the behaviour of a clay barrier submitted to heating and hydration
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| Natura: | Artículo científico |
| Lingua: | en |
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Academia Brasileira de Ciências
2010
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| _version_ | 1876436989569400832 |
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| author | Marcelo Sánchez |
| author_facet | Marcelo Sánchez |
| contents | Effect of thermo-coupled processes on the behaviour of a clay barrier submitted to heating and hydration Marcelo Sánchez Antonio Gens Sebastia Olivella Multidisciplinaria (Ciencias Naturales y Exactas) hydro thermo heating test Expansive clays nuclear waste disposal The storage of high level radioactive waste is still an unresolved problem of the nuclear industry, being geological disposal the most favoured option and, naturally, the one requiring the strongest geo-mechanical input. Most conceptual designs for the deep geological disposal of nuclear waste envisage placing the canisters containing the waste in horizontal drifts or vertical boreholes. The empty space surrounding the canisters is filled by an engineered barrier often made up of compacted swelling clay. In the barrier and the nearfield, significant thermo-hydro-mechanical (THM) phenomena take place that interact in a complex way. A good understanding of THM issues is, therefore, necessary to ensure a correct performance of engineered barriers and seals. The conditions of the bentonite in an engineered barrier for high-level radioactive waste disposal are being simulated in a mock-up heating test at almost scale, at the premises of CIEMAT in Madrid. The evolution of the main Thermo-Hydro-Mechanical (THM) variables of this test are analysed in this paper by using a fully coupled THM formulation and the corresponding finite element code. Special emphasis has been placed on the study of the effect of thermo-osmotic flow in the hydration of the clay barrier at an advanced staged of the experiment. 2010 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32713480013 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.82 |
| format | Artículo científico |
| id | redalyc_32713480013 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Effect of thermo-coupled processes on the behaviour of a clay barrier submitted to heating and hydration Marcelo Sánchez Multidisciplinaria (Ciencias Naturales y Exactas) hydro thermo heating test Expansive clays nuclear waste disposal Effect of thermo-coupled processes on the behaviour of a clay barrier submitted to heating and hydration Marcelo Sánchez Antonio Gens Sebastia Olivella Multidisciplinaria (Ciencias Naturales y Exactas) hydro thermo heating test Expansive clays nuclear waste disposal The storage of high level radioactive waste is still an unresolved problem of the nuclear industry, being geological disposal the most favoured option and, naturally, the one requiring the strongest geo-mechanical input. Most conceptual designs for the deep geological disposal of nuclear waste envisage placing the canisters containing the waste in horizontal drifts or vertical boreholes. The empty space surrounding the canisters is filled by an engineered barrier often made up of compacted swelling clay. In the barrier and the nearfield, significant thermo-hydro-mechanical (THM) phenomena take place that interact in a complex way. A good understanding of THM issues is, therefore, necessary to ensure a correct performance of engineered barriers and seals. The conditions of the bentonite in an engineered barrier for high-level radioactive waste disposal are being simulated in a mock-up heating test at almost scale, at the premises of CIEMAT in Madrid. The evolution of the main Thermo-Hydro-Mechanical (THM) variables of this test are analysed in this paper by using a fully coupled THM formulation and the corresponding finite element code. Special emphasis has been placed on the study of the effect of thermo-osmotic flow in the hydration of the clay barrier at an advanced staged of the experiment. 2010 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32713480013 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.82 |
| title | Effect of thermo-coupled processes on the behaviour of a clay barrier submitted to heating and hydration |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) hydro thermo heating test Expansive clays nuclear waste disposal |
| url | https://www.redalyc.org/articulo.oa?id=32713480013 |