Developing Low pH concrete for tunnel plugging structures in nuclear waste containment

Markku Leivo; Tapio Vehmas; Erika Holt

Developing Low pH concrete for tunnel plugging structures in nuclear waste containment

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Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

This presentation describes research done within an EU FP7 Euratom project, to develop and validate the performance of low-pH concretes used in high level radioactive nuclear waste containment structures. The unique type of concrete is used for deposition tunnel end plugs that are approximately 400 metres underground within repository conditions. The research has focused on producing highly workability mixtures with local materials, where rheology and heat of hydration have been optimized simultaneously with long-term durability and watertightness targets. The results are being implemented with full-scale construction of the 6 metre long tunnel plug in the 15 m2 tunnel cross section.

Original language	English
Pages (from-to)	491-494
Journal	Nordic Concrete Research
Volume	50
Issue number	2
Publication status	Published - 2014
MoE publication type	A1 Journal article-refereed
Event	XIII Nordic Concrete Research Symposium - Reykjavik, Iceland Duration: 13 Aug 2014 → 15 Aug 2014

Keywords

nuclear
durability
binders
silica fume
fly ash
rheology
SCC
performance
permeability
structural design
testing

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https://nordicconcrete.net/wp-content/uploads/2014/02/NCR-vol-50-Proceeding-XXII-FINAL_2014-08-04.pdf

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Leivo, M., Vehmas, T., & Holt, E. (2014). Developing Low pH concrete for tunnel plugging structures in nuclear waste containment. Nordic Concrete Research, 50(2), 491-494. https://nordicconcrete.net/wp-content/uploads/2014/02/NCR-vol-50-Proceeding-XXII-FINAL_2014-08-04.pdf

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abstract = "This presentation describes research done within an EU FP7 Euratom project, to develop and validate the performance of low-pH concretes used in high level radioactive nuclear waste containment structures. The unique type of concrete is used for deposition tunnel end plugs that are approximately 400 metres underground within repository conditions. The research has focused on producing highly workability mixtures with local materials, where rheology and heat of hydration have been optimized simultaneously with long-term durability and watertightness targets. The results are being implemented with full-scale construction of the 6 metre long tunnel plug in the 15 m2 tunnel cross section.",

keywords = "nuclear, durability, binders, silica fume, fly ash, rheology, SCC, performance, permeability, structural design, testing",

author = "Markku Leivo and Tapio Vehmas and Erika Holt",

year = "2014",

language = "English",

volume = "50",

pages = "491--494",

journal = "Nordic Concrete Research",

issn = "0800-6377",

publisher = "Norsk Betongforening",

number = "2",

note = "XIII Nordic Concrete Research Symposium, NCR 2014 ; Conference date: 13-08-2014 Through 15-08-2014",

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TY - JOUR

T1 - Developing Low pH concrete for tunnel plugging structures in nuclear waste containment

AU - Leivo, Markku

AU - Vehmas, Tapio

AU - Holt, Erika

PY - 2014

Y1 - 2014

N2 - This presentation describes research done within an EU FP7 Euratom project, to develop and validate the performance of low-pH concretes used in high level radioactive nuclear waste containment structures. The unique type of concrete is used for deposition tunnel end plugs that are approximately 400 metres underground within repository conditions. The research has focused on producing highly workability mixtures with local materials, where rheology and heat of hydration have been optimized simultaneously with long-term durability and watertightness targets. The results are being implemented with full-scale construction of the 6 metre long tunnel plug in the 15 m2 tunnel cross section.

AB - This presentation describes research done within an EU FP7 Euratom project, to develop and validate the performance of low-pH concretes used in high level radioactive nuclear waste containment structures. The unique type of concrete is used for deposition tunnel end plugs that are approximately 400 metres underground within repository conditions. The research has focused on producing highly workability mixtures with local materials, where rheology and heat of hydration have been optimized simultaneously with long-term durability and watertightness targets. The results are being implemented with full-scale construction of the 6 metre long tunnel plug in the 15 m2 tunnel cross section.

KW - nuclear

KW - durability

KW - binders

KW - silica fume

KW - fly ash

KW - rheology

KW - SCC

KW - performance

KW - permeability

KW - structural design

KW - testing

M3 - Article

VL - 50

SP - 491

EP - 494

JO - Nordic Concrete Research

JF - Nordic Concrete Research

SN - 0800-6377

IS - 2

T2 - XIII Nordic Concrete Research Symposium

Y2 - 13 August 2014 through 15 August 2014

ER -