Hydration Mechanism of Gypsum–Slag Gel Materials
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 1
Abstract
This study investigated the hydration mechanism of gypsum–slag cement gel. Experimental results indicated that products of hydration of gypsum slag cement gel materials were predominantly zeolite minerals and amorphous gel materials that had a chemical structure similar to that of zeolites mineral. Under standard curing conditions, rodlike and cubic shapes of zeolite minerals formed with a relatively small crystal sizes. Citrate retarders were able to control the generation mechanism of various minerals in slurry; change the hydration products in the semihydrated gypsum with respect to concretion, numbers, and percentage before hardening; and affect the structure of the hardened products.
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Acknowledgments
The authors greatly acknowledge the support from the Natural Science Foundation of China (Project No. 31560266), the Natural Science Foundation of Jiangxi Province of China (20181BAB206028), and Jiangxi provincial education department science and technology research project (Project No. GJJ160732).
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 1 • January 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jan 10, 2019
Accepted: Jun 17, 2019
Published online: Oct 25, 2019
Published in print: Jan 1, 2020
Discussion open until: Mar 25, 2020
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