Journal
ADVANCES IN APPLIED CERAMICS
Volume 105, Issue 4, Pages 191-196Publisher
MANEY PUBLISHING
DOI: 10.1179/174367606X120142
Keywords
bayerite; stratlingite; corrosion; cement; brucite
Categories
Ask authors/readers for more resources
Legacy radioactive wastes arising from reprocessing of nuclear fuels in the UK are classified as intermediate level waste ( ILW), which contain things such as aluminium and magnesium. Blast furnace slag ( BFS) composite cements are used to encapsulate ILW. These cements have a high pH which is advantageous to limit the mobility of some of the radioactive species but can cause corrosion of metals. The present paper describes some fundamental aspects of corrosion of aluminium and magnesium in BFS composite cements. The corrosion of aluminium produced an interface between aluminium and cement which was porous with a series of zones containing bayerite (Al(OH)(3)) and stratlingite ( 2CaO(center dot)Al(2)O(3 center dot)SiO(2 center dot)8H(2)O). With magnesium, the main corrosion product was found to be brucite (Mg(OH)(2)) and the porous zone was less pronounced. The hydration of the bulk cement did not appear to be affected by the corrosion of these metals.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available