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

Erika Holt; Markku Leivo; Ville Sjöblom; Johanna Hansen

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

Erika Holt, Markku Leivo, Ville Sjöblom, Johanna Hansen

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-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 language	English
Title of host publication	Nordic Concrete Research
Subtitle of host publication	Proceedings of the XXIII Nordic Concrete Research Symposium, Aalborg, Denmark 2017
Chapter	B8
Pages	369-372
ISBN (Electronic)	978-82-8208-056-9
Publication status	Published - 2017
MoE publication type	A4 Article in a conference publication
Event	XXIII Nordic Concrete Research Symposium - Aalborg, Denmark Duration: 21 Aug 2017 → 23 Aug 2017

Publication series

Series	Nordic Concrete Research
ISSN	0800-6377

Conference

Conference	XXIII Nordic Concrete Research Symposium
Country	Denmark
City	Aalborg
Period	21/08/17 → 23/08/17

Keywords

mix design
SCC
execution
nuclear
supplementary cementitious materials
repository

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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). Nordic Concrete Research https://nordicconcrete.net/wp-content/uploads/2017/08/XXIII-NCR-Symposium-DEL4-B5-B8-proceedings.pdf

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title = "Development and demonstration of concrete for investigative deep borehole sealing at Olkiluoto nuclear repository site",

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.",

keywords = "mix design, SCC, execution, nuclear, supplementary cementitious materials, repository",

author = "Erika Holt and Markku Leivo and Ville Sj{\"o}blom and Johanna Hansen",

note = "Project code: 112471 ; XXIII Nordic Concrete Research Symposium ; Conference date: 21-08-2017 Through 23-08-2017",

year = "2017",

language = "English",

series = "Nordic Concrete Research",

publisher = "Norsk Betongforening",

pages = "369--372",

booktitle = "Nordic Concrete Research",

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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. Nordic Concrete Research, pp. 369-372, XXIII Nordic Concrete Research Symposium, Aalborg, Denmark, 21/08/17. <https://nordicconcrete.net/wp-content/uploads/2017/08/XXIII-NCR-Symposium-DEL4-B5-B8-proceedings.pdf>

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 (Nordic Concrete Research).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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AU - Leivo, Markku

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N1 - Project code: 112471

PY - 2017

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N2 - 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.

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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KW - SCC

KW - execution

KW - nuclear

KW - supplementary cementitious materials

KW - repository

M3 - Conference article in proceedings

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BT - Nordic Concrete Research

T2 - XXIII Nordic Concrete Research Symposium

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