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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Holt, Erika
VTT Technical Research Centre of Finland
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2020Characterization of Cebama low-pH reference concrete and assessment of its alteration with representative waters in radioactive waste repositoriescitations
- 2020Characterization of Cebama low-pH reference concrete and assessment of its alteration with representative waters in radioactive waste repositoriescitations
- 2020Contribution of the results of the CEBAMA project to decrease uncertainties in the Safety Case and Performance Assessment of radioactive waste repositoriescitations
- 2017Comparison of experimental and modelled pore solutions of low-pH Ordinary Portland Cement based mix designs
- 2017Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site
- 2014Developing Low pH concrete for tunnel plugging structures in nuclear waste containment
- 2014Development of durable pervious concrete for Finland's stormwater management needs
- 2012Concrete durability based on coupled deterioration by frost, carbonation and chloride
- 2011Buffer component manufacturing by uniaxial compression method:Small scale
- 2011Buffer component manufacturing by uniaxial compression method
- 2006Use of gasification residues in compacted concrete paving blockscitations
- 2004Recent Finnish experience with environmentally-friendly and durable HPC
- 2004Implementing environmentally-friendly and durable concrete to Finnish practice
Places of action
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document
Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site
Abstract
Flowable low-pH concrete was developed and demonstratedfor closure of site investigation boreholes. Theboreholes have been used during geologicalcharacterization of the nuclear spent fuel disposal siteat Olkiluoto, Finland. Posiva Oy has over 60 deep coredboreholes of varying diameter (typically 56 to 76 mm) andat lengths from 200 to 1200 metres deep. Two holes weresealed in 2016 using materials developed in VTT'slaboratories. The low-pH concrete needed to have highworkability for casting emplacement to a 1000 metre deephole and high long-term durability with low hydraulicconductivity. The results are being used for licenseapplications to Radiation and Nuclear Safety Authority ofFinland, to show compliance with repository safety.