This is the accepted version of the following article: Newlands KC, Foss M, Matchei T, Skibsted J, Macphee DE. Early stage dissolution characteristics of aluminosilicate glasses with a blast furnace and fly-ash-like composition. J Am Ceram Soc. 2017;100:1941–1955, which has been published in final form at DOI: 10.1111/jace.14716. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [http://olabout.wiley.com/WileyCDA/Section/id-828039.html].