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

Minerals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1348
Author(s):  
Senlin Nan ◽  
Wentao Li ◽  
Weiming Guan ◽  
Huabin Liu ◽  
Hongchao Zhao ◽  
...  

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.

2005 ◽  
Vol 906 ◽  
Author(s):  
Alexander Sergeevitch Vanetsev ◽  
Andrei Vladimirovitch Orlov ◽  
Yurii Dmitrievitch Tretyakov

AbstractThe goal of this work was to investigate the capabilities of high-power microwaves in manufacture of small-grained barium cerate ceramics. Having compared the samples sintered in the microwave and the thermal fields, we inferred that the microwave sintering occurs at far higher rates. It is also noteworthy that microwave sintering provides a record-breaking low temperature of barium cerate sintering (900°C). Having studied the effect of a microwave field on the microstructure of sintering products, we found that high-power microwave processing significantly reduces the average grain size of barium cerate ceramics.


1999 ◽  
Vol 25 (8) ◽  
pp. 595-597 ◽  
Author(s):  
K. S. Zhuravlev ◽  
A. I. Toropov ◽  
T. S. Shamirzaev ◽  
A. K. Bazarov ◽  
Yu. N. Rakov ◽  
...  

1996 ◽  
Author(s):  
Thad J. Englert ◽  
Michael D. Haworth ◽  
Kyle J. Hendricks ◽  
Frederick M. Lehr ◽  
Donald A. Shiffler

1996 ◽  
Vol 89 (6) ◽  
pp. 1638-1648 ◽  
Author(s):  
Steven L. Halverson ◽  
Wendell E. Burkholder ◽  
Timothy S. Bigelow ◽  
Erik V. Nordheim ◽  
Mark E. Misenheimer

2000 ◽  
Author(s):  
Yongming Hu ◽  
Zhe Chen ◽  
Yanbiao Liao ◽  
Zhou Meng ◽  
Shengli Chang ◽  
...  

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