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

Authors :
Wen Yingyuan
Huabin Liu
Wentao Li
Junhui Yao
Hongchao Zhao
Weiming Guan
Senlin Nan
Source :
Minerals; Volume 11; Issue 12; Pages: 1348, Minerals, Vol 11, Iss 1348, p 1348 (2021)
Publication Year :
2021
Publisher :
Multidisciplinary Digital Publishing Institute, 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
Database :
OpenAIRE
Journal :
Minerals; Volume 11; Issue 12; Pages: 1348
Accession number :
edsair.doi.dedup.....2f539d82d1eddc7408238e0212eaaecb
Full Text :
https://doi.org/10.3390/min11121348