Composition–solubility–structure relationships in calcium (alkali) aluminosilicate hydrate (C-(N,K-)A-S-H)
作者： Rupert J. Myers , Emilie L'Hôpital , John L. Provis , Barbara Lothenbach
DOI: 10.1039/C5DT01124H
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摘要: The interplay between the solubility, structure and chemical composition of calcium (alkali) aluminosilicate hydrate (C-(N,K-)A-S-H) equilibrated at 50 °C is investigated in this paper. tobermorite-like C-(N,K-)A-S-H products are more crystalline presence alkalis, generally have larger basal spacings lower Ca/Si ratios. Both Na K incorporated into interlayer space phases, with alkali uptake observed higher Ca content. No relationship Al identified concentrations (Al/Si ≤ 0.1). More stable formed content, but factor only significant some samples ratios ≤1. Shorter chain lengths cross-linking (alumino)silicate chains greatly promoted by increasing concentrations. calculated solubility do not depend on mean length a constant Ca/(Al + Si) ratio, or Al/Si ratio C-(N,K-)A-S-H. These results important for understanding stability C-(N,K-)A-S-H, which key phase majority cements concretes used worldwide.
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