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

Minerals

卷:11

Senlin Nan¹  Yingyuan Wen¹  Junhui Yao¹  Weiming Guan¹  Huabin Liu¹  Wentao Li¹  Hongchao Zhao¹ 

[1] College of Geology and Mines Engineering, Xinjiang University, Urumqi 830047, China;

关键词: microwave;    gypsum cementation;    analog materials;    hardening rate;    analog physical simulation experiment;   

DOI  :  10.3390/min11121348

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown