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Influence of Curing Humidity on the Compressive Strength of Gypsum-Cemented Similar Materials
Joint Authors
Zhang, Dongsheng
Guan, Weiming
Wen, Yingyuan
Wang, Xufeng
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-11-28
Country of Publication
Egypt
No. of Pages
12
Abstract EN
The analogous simulation experiment is widely used in geotechnical and mining engineering.
However, systematic errors derived from unified standard curing procedure have been underestimated to some extent.
In this study, 140 gypsum-cemented similar material specimens were chosen to study their curing procedure with different relative humidity, which is 10%–15%, 40%, 60%, and 80%, respectively.
SEM microstructures and XRD spectra were adopted to detect the correlation between microstructures and macroscopic mechanical strength during curing.
Our results indicated that the needle-like phases of similar materials began to develop in the early stage of the hydration process through intersecting with each other and eventually transformed into mat-like phases.
Increase of humidity may inhibit the development of needle-like phases; thus the compressive strength changes more smoothly, and the time required for the material strength to reach the peak value will be prolonged.
The peak strength decreases along with the increase of humidity while the humidity is higher than 40%; however, the reverse tendency was observed if the humidity was lower than 40%.
Finally, we noticed that the material strength usually reaches the peak value when the water content continuously reduces and tends towards stability.
Based on the above observation, a curing method determination model and experimental strength predication method for gypsum-cemented similar materials were proposed.
American Psychological Association (APA)
Guan, Weiming& Zhang, Dongsheng& Wen, Yingyuan& Wang, Xufeng. 2016. Influence of Curing Humidity on the Compressive Strength of Gypsum-Cemented Similar Materials. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1096350
Modern Language Association (MLA)
Guan, Weiming…[et al.]. Influence of Curing Humidity on the Compressive Strength of Gypsum-Cemented Similar Materials. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-12.
https://search.emarefa.net/detail/BIM-1096350
American Medical Association (AMA)
Guan, Weiming& Zhang, Dongsheng& Wen, Yingyuan& Wang, Xufeng. Influence of Curing Humidity on the Compressive Strength of Gypsum-Cemented Similar Materials. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-12.
https://search.emarefa.net/detail/BIM-1096350
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096350