Premium
Influence of Gluconate, Lignosulfonate, and Glucose Admixtures on the Hydration of Tetracalcium Aluminoferrite in the Presence of Gypsum with or without Calcium Hydroxide
Author(s) -
Collepardi M.,
Monosi S.,
Moriconi G.,
Pauri M.
Publication year - 1985
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.1151-2916.1985.tb15330.x
Subject(s) - ettringite , gypsum , chemistry , calcium hydroxide , calcium , sulfate , hydroxide , nuclear chemistry , inorganic chemistry , cement , metallurgy , materials science , portland cement , organic chemistry
The influence of 0.3 wt% gluconute, lignosulfonate, or glucose on the hydration of 4CaO·A1 2 O 3 ‐Fe 2 O 3 in the presence of gypsum with or without Ca(OH) 2 , was examined. In the absence of Ca(OH) 2 all the admixtures retard both ettringite production and subsequent conversion of ettringite into the monosulfate in the decreasing order glucose >lignosulfonate >gluconate. In the presence ofCa(OH) 2 all the admixtures accelerate early ettringite production but do not affect subsequent conversion of ettringite into the monosulfate, at least up to 28 d.