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Reactivities of Various Silicates with Calcium Hydroxide and Water
Author(s) -
KONDO RENICHI,
OHSAWA SHIGENARI
Publication year - 1979
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.1151-2916.1979.tb19102.x
Subject(s) - metakaolin , pozzolan , pozzolanic reaction , calcium hydroxide , alkali–silica reaction , portland cement , reactivity (psychology) , cement , aggregate (composite) , alkali–aggregate reaction , materials science , mineralogy , pozzolanic activity , hydration reaction , alkali metal , chemical engineering , chemistry , inorganic chemistry , composite material , organic chemistry , medicine , alternative medicine , pathology , engineering
The reactivity of oxides and silicates with alkaline solutions is especially important in cement chemistry and is closely related to the pozzolanic reaction, the alkali‐aggregate reaction, and to glass fiber reinforcement of hardened cement. Thus, the rate of the hydration reaction between several silicates and Ca(OH) 2 or portland cement at 20° and 80°C was studied. Results showed that essentially high reactivity in the reaction with Ca(OH) 2 was found in Italian pozzolan, metakaolin, and silica gel in which the first two have very high Blaine surface areas. The pozzolanic reaction of typical oxides and silicates was considered from a thermodynamic point of view.