Nanoscale heterogeneities in a fractured alkali-activated slag binder: A helium ion microscopy analysis. (January 2016)

• Record Type: Journal Article
• Authors: Morandeau, Antoine E.; Fitts, Jeffrey P.; Lee, Hang D.; Shubeita, Samir M.; Feldman, Leonard C.; Gustafsson, Torgny; White, Claire E.
• Is Part Of: Cement and concrete research. Volume 79(2016)
• Page Start: 45
• Page End: 48
• Publication Date: 2016-01
• Subjects: Helium ion microscopy -- Alkali activated cement -- Microstructure -- Granulated blast-furnace slag -- Drying; Cement -- Periodicals; Cement -- Research -- Periodicals; Concrete -- Periodicals; Concrete -- Research -- Periodicals; Ciment -- Périodiques; Béton -- Périodiques; Cement; Concrete; Periodicals; 620.135
• DOI: 10.1016/j.cemconres.2015.07.007
• Languages: English
• ISSNs: 0008-8846

Abstract

Abstract: Helium ion microscopy is used to provide new insight into the nano- and microscale morphology of cleaved surfaces of alkali-activated slag (AAS), revealing that AAS contains several types of gel with varying surface morphologies after being subjected to D-drying. It is seen that the bulk C-(N)-A-S-H gel is globular in nature in a silicate-activated slag paste while the gel covering the slag particles is foil-like.