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

Markku Leivo, Tapio Vehmas, Erika Holt

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


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 languageEnglish
Title of host publicationPapers from XIII Nordic concrete recearch symposium
PublisherThe Nordic Concrete Federation (NCF)
Publication statusPublished - 2014
MoE publication typeA4 Article in a conference publication
EventXIII Nordic Concrete Research Symposium - Reykjavik, Iceland
Duration: 13 Aug 201415 Aug 2014

Publication series

SeriesNordic Concrete Research


ConferenceXIII Nordic Concrete Research Symposium
Abbreviated titleNCR 2014


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


Dive into the research topics of 'Developing Low pH concrete for tunnel plugging structures in nuclear waste containment'. Together they form a unique fingerprint.

Cite this