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The Radiation Stability of Ground Granulated Blast Furnace Slag/ordinary Portland Cement Grouts Containing Organic Admixtures

Published online by Cambridge University Press:  01 January 1992

John D Palmer  and
Graham A Fairhall
John D Palmer
Affiliation:
British Nuclear Fuels plc, Sellafield, Seascale, Cumbria, UK
Graham A Fairhall
Affiliation:
British Nuclear Fuels plc, Sellafield, Seascale, Cumbria, UK
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Abstract

At the British Nuclear Fuels (BNFL) Sellafield reprocessing plant in the United Kingdom, cement grouts based on ground granulated blast-furnace slag (BFS) and ordinary Portland cement (OPC) are used extensively for immobilising radioactive wastes. These grouts have excluded organic admixtures in order to reduce process complexity and uncertainties, regarding the performance of organic admixtures with BFS/OPC grouts, particularly under irradiation.

This study has investigated the effects of sulfonated melamine formaldehyde and naphthalene condensates on grout properties. The results show grout settlement and strengths increase on addition of additives, with the additives remaining largely in the pore solution. Under irradiation the additives breakdown liberating hydrogen and carbon dioxide. Strength and product dimensions are unaffected by irradiation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 294: Symposium V – Scientific Basis for Nuclear Waste Management XVI , 1992 , 285
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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