Abstract
Differential scanning calorimetry, thermogravimetry and gas analysis were used to study the impact of high-energy mechanical milling (HEMM) on the rejuvenation of a granulated blast furnace slag (GBS). It is found that milled GBS – ground granulated blast furnace slag (GGBS) in practice – shows an enormous release of exothermic heat in the sub-Tg range upon heating at 10 K min−1, which increases with milling time and exceeds more than three times that of the unmilled GBS. Heating of GGBS revealed that the energy release of HEMM-activated glasses occurs at considerably lower temperatures than observed for thermally excited glasses (hyperquenched fibers). The difference in the characteristic release temperatures is assigned to two different relaxation mechanisms. The former (HEMM), is due to relaxation of structural defects on the surface of the powder particles, whereas the latter (hyperquenched glass), comprises relaxation of the entire glass structure throughout the volume.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
