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This research aims to evaluate the transport behavior of caesium and strontium in geopolymer cements for waste immobilization.

February 2, 2026Open Access

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Mass transport behaviour of caesium and strontium in geopolymer cements

CNCharlotte NevinUniversity of Sheffield DGDaniel GeddesUniversity of Sheffield CTClare L. ThorpeUniversity of Sheffield

Key Points

This research aims to evaluate the transport behavior of caesium and strontium in geopolymer cements for waste immobilization.
Conducted experiments on geopolymer cements with caesium and strontium
Measured leach rates of the radioactive fission products
Assessed durability under different conditions
Geopolymers showed significantly lower leach rates compared to Portland cement
Caesium and strontium were effectively immobilized in the geopolymer matrix
Enhanced durability was observed in the tested geopolymer samples

Abstract

Geopolymers are a promising alternative to conventional Portland cement-based wasteforms for immobilising hazardous radioactive fission products such as caesium-137 and strontium-90, offering superior durability and lower leach rates. However, the...

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Mass transport behaviour of caesium and strontium in geopolymer cements

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