Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Flowable low-pH concrete was developed and demonstrated for closure of site investigation boreholes. The boreholes have been used during geological characterization of the nuclear spent fuel disposal site at Olkiluoto, Finland. Posiva Oy has over 60 deep cored boreholes of varying diameter (typically 56 to 76 mm) and at lengths from 200 to 1200 metres deep. Two holes were sealed in 2016 using materials developed in VTT's laboratories. The low-pH concrete needed to have high workability for casting emplacement to a 1000 metre deep hole and high long-term durability with low hydraulic conductivity. The results are being used for license applications to Radiation and Nuclear Safety Authority of Finland, to show compliance with repository safety.
Original languageEnglish
Title of host publicationNordic Concrete Research
Subtitle of host publicationProceedings of the XXIII Nordic Concrete Research Symposium, Aalborg, Denmark 2017
ChapterB8
Pages369-372
Publication statusPublished - 2017
MoE publication typeA4 Article in a conference publication
EventXXIII Nordic Concrete Research Symposium - Aalborg, Denmark
Duration: 21 Aug 201723 Aug 2017

Conference

ConferenceXXIII Nordic Concrete Research Symposium
CountryDenmark
CityAalborg
Period21/08/1723/08/17

Fingerprint

Boreholes
Demonstrations
Concretes
Spent fuels
Hydraulic conductivity
Nuclear fuels
Casting
Durability
Radiation

Keywords

  • mix design
  • SCC
  • execution
  • nuclear
  • supplementary cementitious materials
  • repository

Cite this

Holt, E., Leivo, M., Sjöblom, V., & Hansen, J. (2017). Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site. In Nordic Concrete Research : Proceedings of the XXIII Nordic Concrete Research Symposium, Aalborg, Denmark 2017 (pp. 369-372)
Holt, Erika ; Leivo, Markku ; Sjöblom, Ville ; Hansen, Johanna. / Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site. Nordic Concrete Research : Proceedings of the XXIII Nordic Concrete Research Symposium, Aalborg, Denmark 2017. 2017. pp. 369-372
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abstract = "Flowable low-pH concrete was developed and demonstrated for closure of site investigation boreholes. The boreholes have been used during geological characterization of the nuclear spent fuel disposal site at Olkiluoto, Finland. Posiva Oy has over 60 deep cored boreholes of varying diameter (typically 56 to 76 mm) and at lengths from 200 to 1200 metres deep. Two holes were sealed in 2016 using materials developed in VTT's laboratories. The low-pH concrete needed to have high workability for casting emplacement to a 1000 metre deep hole and high long-term durability with low hydraulic conductivity. The results are being used for license applications to Radiation and Nuclear Safety Authority of Finland, to show compliance with repository safety.",
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Holt, E, Leivo, M, Sjöblom, V & Hansen, J 2017, Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site. in Nordic Concrete Research : Proceedings of the XXIII Nordic Concrete Research Symposium, Aalborg, Denmark 2017. pp. 369-372, XXIII Nordic Concrete Research Symposium, Aalborg, Denmark, 21/08/17.

Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site. / Holt, Erika; Leivo, Markku; Sjöblom, Ville; Hansen, Johanna.

Nordic Concrete Research : Proceedings of the XXIII Nordic Concrete Research Symposium, Aalborg, Denmark 2017. 2017. p. 369-372.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AB - Flowable low-pH concrete was developed and demonstrated for closure of site investigation boreholes. The boreholes have been used during geological characterization of the nuclear spent fuel disposal site at Olkiluoto, Finland. Posiva Oy has over 60 deep cored boreholes of varying diameter (typically 56 to 76 mm) and at lengths from 200 to 1200 metres deep. Two holes were sealed in 2016 using materials developed in VTT's laboratories. The low-pH concrete needed to have high workability for casting emplacement to a 1000 metre deep hole and high long-term durability with low hydraulic conductivity. The results are being used for license applications to Radiation and Nuclear Safety Authority of Finland, to show compliance with repository safety.

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Holt E, Leivo M, Sjöblom V, Hansen J. Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site. In Nordic Concrete Research : Proceedings of the XXIII Nordic Concrete Research Symposium, Aalborg, Denmark 2017. 2017. p. 369-372