Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cracks in concrete structures within a radioactive waste repository could provide fast transport pathways and as such could impair the performance of the concrete as a barrier to radionuclide migration. It has been widely reported that cracks in concrete can heal and, therefore, the evidence in support of this phenomenon has been reviewed and its relevance to a concrete barrier in a radioactive waste repository assessed. The mechanism of crack healing is not understood, but the most likely process responsible is calcite formation under wet conditions. There is doubt concerning whether the conditions in a repository will be suitable for crack healing; especially if the cement is extensively modified with slag or fuel ash. It is concluded that further experimental work is required to assess the impact of this phenomenon on the behaviour of cracks in repositories. (ERA citation 13:035831)
Cracks in concrete structures within a radioactive waste repository could provide fast transport pathways and as such could impair the performance of the concrete as a barrier to radionuclide migration. It has been widely reported that cracks in concrete can heal and, therefore, the evidence in support of this phenomenon has been reviewed and its relevance to a concrete barrier in a radioactive waste repository assessed. The mechanism of crack healing is not understood, but the most likely process responsible is calcite formation under wet conditions. There is doubt concerning whether the conditions in a repository will be suitable for crack healing; especially if the cement is extensively modified with slag or fuel ash. It is concluded that further experimental work is required to assess the impact of this phenomenon on the behaviour of cracks in repositories. (ERA citation 13:035831)
Autogenous Healing of Cracks in Concrete and Its Relevance to Radwaste Repositories
R. Guppy (Autor:in)
1988
23 pages
Report
Keine Angabe
Englisch
Radioactive Wastes & Radioactivity , Water Pollution & Control , Construction Equipment, Materials, & Supplies , Construction Materials, Components, & Equipment , Concretes , Radioactive Waste Disposal , Cracks , Radioactive Waste Facilities , Radionuclide Migration , Performance Testing , Repair , Foreign technology , ERDA/052002 , Calcite
Water Permeability and Autogenous Healing of Cracks In Concrete
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Water Permeability and Autogenous Healing of Cracks in Concrete
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Water Penetrability and Autogenous Healing of Separation Cracks in Concrete
| Online Contents | 1996
Water Penetrability and Autogenous Healing of Separation Cracks in Concrete
| British Library Online Contents | 1996