Efficiency of a blast furnace slag cement for immobilizing simulated borate radioactive liquid waste |
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Authors: | Guerrero A Goñi S |
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Institution: | Institute of Construction Science Eduardo Torroja, Madrid, Spain. aguerrero@ietcc.csic.es |
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Abstract: | The efficiency of a blast furnace slag cement (Spanish CEM III/B) for immobilizing simulated radioactive borate liquid waste containing H3BO3, NaCl, Na2SO4 and Na(OH)] has been evaluated by means of a leaching attack in de-mineralized water at the temperature of 40 degrees C over 180 days. The leaching was carried out according to the ANSI/ANS-16.1-1986 test. Moreover, changes of the matrix microstructure were characterized through porosity and pore-size distribution analysis carried out by mercury intrusion porosimetry (MIP), X-ray diffraction (XRD) and thermal analysis (TG). The results were compared with those obtained from a calcium aluminate cement matrix, previously published. |
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