1988/01/01 by A. Atkinson, Alan Atkinson, Nicoia M. Everitt +1 · 1 citation
Engineering · Materials Science · #Cement #Cementitious #Chemical engineering #Concrete and Cement Materials Research #Engineering #Graphite, nuclear technology, radiation studies #Ground granulated blast-furnace slag #Materials science #Metallurgy #Portland cement #Radioactive waste #Recycled Aggregate Concrete Performance #Slag (welding) #Waste management
paper · doi:10.1557/proc-127-439
crossref issued 1988/01/01 · crossref published 1988/01/01 · crossref published-print 1988/01/01 · openalex publication_date 1988/01/01 · crossref published-online 2011/02/26 · crossref created 2011/03/06 · crossref deposited 2021/02/24 · openalex created_date 2025/10/10 · crossref indexed 2026/04/29 · openalex updated_date 2026/06/26
ABSTRACT The pH of a cementitious radioactive waste repository is expected to decrease with time as water leaches out soluble ions or as a result of reactions between repository constituents. These processes have been simulated in the laboratory and the results compared with behaviour anticipated from the known chemistry of cement compounds. The studies indicate that the pH in Portland cements and Blast Furnace Slag cements (BFS) is likely to remain above 10.5 for very long periods of time, of the order of several hundred thousand years for a typical repository. They also show that extensive use of Pulverized Fuel Ash (PFA) leads to uncertainty in long term pH which could be as low as 9 to 10 in some cases.