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Improvement in Hydration Reactivity of α‐Phase Belite by Remelting Reaction
Author(s) -
Fukuda Koichiro,
Wakamatsu Norihiko,
Ito Suketoshi
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00713.x
Subject(s) - belite , reactivity (psychology) , phase (matter) , alkali metal , materials science , mineralogy , chemical engineering , metallurgy , geology , chemistry , organic chemistry , cement , portland cement , medicine , alternative medicine , clinker (cement) , pathology , engineering
The hydration reactivity of the α‐phase belite, containing small amounts of Na 2 O, Al 2 O 3 , and Fe 2 O 3 , was significantly improved by the remelting reaction. The remelted belite, in which the reaction sufficiently occurred, was exclusively composed of the twinned β‐phase. The liquid, which was exsolved by the reaction, concentrated the Na 2 O component. Both the exsolved alkali and the twin boundaries accelerated the early stage of the hydration; the 2 d cumulative heat evolution of the remelted belite (∼120 J/g) was about twice that of the α‐phase belite (∼65 J/g). The grindability was also improved by the remelting reaction, which agreed with previous studies.