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Research on the Rapid Strengthening Mechanism of Microwave Field-Controlled Gypsum-Cemented Analog Materials

Authors :
Senlin Nan
Wentao Li
Weiming Guan
Huabin Liu
Hongchao Zhao
Yingyuan Wen
Junhui Yao
Source :
Minerals, Vol 11, Iss 12, p 1348 (2021)
Publication Year :
2021
Publisher :
MDPI AG, 2021.

Abstract

Various geotechnical experiments have used gypsum-cemented analog geotechnical materials. However, this material needs a long curing time, and the target strength is not easy to control. Therefore, this research adopted microwave heating as the curing method for this kind of material. Objectively, the authors investigated the variations in the material strength versus heating power and heating time. On this basis, we clarified the influence mechanism of microwaves on the strength of analog materials by analyzing material temperature, moisture content, and microstructure, which eventually led to an experimental control method for rapid strengthening of microwave field-controlled gypsum-cemented analog materials. Consequently, we drew the following conclusions. The stable strength of the material under high-power microwave curing was much lower than that under natural curing, while the material strength under low-power microwave curing was the closest to the material under natural curing.

Details

Language :
English
ISSN :
2075163X
Volume :
11
Issue :
12
Database :
Directory of Open Access Journals
Journal :
Minerals
Publication Type :
Academic Journal
Accession number :
edsdoj.3ed0bddd96664c3d85a2c8d123319176
Document Type :
article
Full Text :
https://doi.org/10.3390/min11121348